Let's not wait any longer, he might no...

单项选择题Let's not wait any longer, he might not（）at all.

A.turn over
B.turn up
C.turn on
D.turn down

1.单项选择题One day while Mr. King was working, he had a(an)（）and his left leg was badly injured.

A.business
B.accident
C.matter
D.event

2.单项选择题It is assumed that students at an intermediate level will have a good（）of the basic structures and vocabulary of English.

A.command
B.commanding
C.to command
D.commanded

3.单项选择题I am pleased to take（）to exchange views with you.

A.this opportunity
B.a chance
C.this time
D.aperiod

4.单项选择题Please leave the key under the door（）you go out.

A.in case
B.in the case
C.in case of
D.in the case of

5.单项选择题We have kept（）our friendship by writing to each other, so we are true friends.

A.back
B.up
C.off
D.down

6.单项选择题It（）that I met one of my old classmates on my way home yesterday.

A.took place
B.occurred
C.broke out
D.happened

7.单项选择题We advised him to give up smoking,（）a lot of exercise.

A.to do
B.and to do
C.and do
D.and doing

8.单项选择题The refrigerator is（）we must buy some food.

A.bare
B.blank
C.hollow
D.empty

9.单项选择题These plants are rather difficult（）

A.to look after
B.to be looked after
C.being looked after
D.looking after

10.单项选择题The act of speaking will also help to improve listening comprehension（）

A.to some way
B.in the way
C.to some extent
D.in the extent