Noise is unpleasant，_________ when you are absorbed in readin 9.

A) Had they

B) Have they

C) Would they have

D) If they，

A) but

B) what

C) as

D) that

A) in

B) on

C) for

D) to

A) paid

B) took

C) spent

D) cost

A. that B. of whom C. whose D. which

A. did he injure B. injured he was

C. he was injured D. was he injured

A. wouldn’t she B. shouldn’t she

C. should she D. would she

A. since B. as C. when D. while

A. There have B. There is

C. There are D. There was

A. When compared B. Compared

C. While comparing D. Comparing