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The millions of calculations involved, had they been done by hand, ______ all practical value by the time they were finished.
A.could lose
B.would have lost
C.might lose
D.ought to have lost
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单项选择题
Mary ______ my letter,otherwise she would have replied before now.
A.has received
B.ought to have received
C.couldn"t have received
D.should have received
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Carey didn"t go to the party last night because she ______ the baby for her sister until 9:30.
A.must have looked after
B.would have to look after
C.had to look after
D.should have looked after
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单项选择题
From the tears in Nedra"s eyes we can deduce that something sad ______ .
A.must have occurred
B.would have occurred
C.might be occurring
D.should occur
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单项选择题
The millions of calculations involved, had they been done by hand, ______ all practical value by the time they were finished.
A.could lose
B.would have lost
C.might lose
D.ought to have lost
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My pain ______ apparent the moment I walked into the room, for the first man I met asked sympathetically: "Are you feeling all right"
A.must be
B.had been
C.must have been
D.had to be
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As it turned out to be a small house party,we ______ so formally.
A.needn"t dress up
B.did not need have dressed up
C.did not need dress up
D.needn"t have dressed up
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You ______ all these parcels yourself. The shop Would have delivered them if you had asked a shop assistant.
A.didn"t need to carry
B.needn"t have carried
C.needn"t carry
D.didn"t need carry
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单项选择题
The streets are all wet. It ______ during the night.
A.must be raining
B.must have been rained
C.must be rained
D.must have rained
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I should like ______ the result earlier.
A.to tell
B.having told
C.to have told
D.to have been told
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He can"t plead ignorance as his excuse; he ______ what was happening in his own department.
A.would know
B.should have known
C.had known
D.has known
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He was away ill. He ______ the meeting here.
A.must not have attended
B.could not be able to attend
C.can"t have attended
D.mustn"t attend
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Eve had to pay $5.00 because she wrote a bad (空头的) check. She ______ her money before she wrote a check.
A.must have deposited
B.might have deposited
C.can have deposited
D.should have deposited
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Blance got a parking ticket. She ______ in a reserved spot since she had no permit.
A.can"t park
B.couldn"t have parked
C.should not have parked
D.should not park
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Henry"s car stopped on the highway. It ______ out of gas.
A.may not run
B.may have run
C.must run
D.ought to run
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Since she is angry, we ______ her alone.
A.had better leaving
B.must leave
C.can leave
D.might as well leave
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Come what ______ ,we"re not going to make any concessions to his unreasonable demands.
A.must
B.should
C.can
D.may
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Observations were made ______ the children at the beginning and at the end of pre-school and first grade.
A.towards
B.of
C.on
D.with
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Although we feel dissatisfied with the election results, we have to become reconciled ______ the decision made by our fellow countrymen.
A.for
B.on
C.to
D.in
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I"ve kept up a friendship with a girl whom I was at school ______ twenty years ago.
A.about
B.since
C.till
D.with
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This is an existing area of study, and one ______ which new applications are being discovered almost daily.
A.from
B.by
C.in
D.through
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Although I had been invited to the opening ceremony, I was unable to attend ______ such short notice.
A.to
B.in
C.with
D.on
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