问答题

Mary was out all night and her parents kept asking her where she______.
A．was
B．is
C．had been
D．has been

A.
A．was
B．is
C．had
B.has

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We feel sorry______those who died or got injured in the disaster.
A．at
B．with
C．for
D．in

A.
A．at
B．with
C．for
D．in

Not discouraged by the accident, she began to work______.
A．as twice hard
B．harder twice
C．twice as harder
D．twice as hard

A.
A．as
B.harder
C.twice
D.twice