A. on
B. in
C. with
D. by
12.Do remember to ______ the light when you leave the room.
A. turn up
B. turn on
C. turn off
D. turn down
13.The atmosphere consists of an ocean of gases ______ miles high.
A. hundreds
B. hundreds of
C. of hundreds
D. of hundreds of
14.Not only the students but also the old teacher ______ been changed.
A. was
B. were
C. has
D. have
15.—— ________ I had!
—— You really suffered a lot.
A. What a time
B. What time
C. How a time
D. how time
16.The advertisements are trying ________ people to buy things they don‘t really need.
A. persuade
B. persuading
C. be persuading
D. to persuade
17.Practice ________ English every day.
A. speak
B. to speak
C. speaks
D. speaking
18.The discount houses were first established in that period of time ________ people‘s purchasing power was low.
A. which
B. that
C. when
D. where
19.Please write a report ________ the above subjects are to be covered.
A. which
B. in which
C. that
D. in that
20.The reason ________ I‘m writing is to ask for your permission to translate your latest novel into Chinese.
A. because
B. why
C. for
D. as
