36._____ the poem a second time, the meaning will become clearer to you.

　A. our having read　　　　　 　　 B. While reading

　C. If reading　　　　　　　　 　D. When you read

35._____ much advice I gave him, he did exactly what he wanted to do.

　A. How　　　　　　　　 　　B. Whatever

C. However　　　　　　　　 　D. No matter

34.They were surprised that a child should work out the problem　_____ they

　 themselves couldn't.

　A. once　　　　　　　　 　　 B. then

C. while　　　　　　　　 　　D. if

33.Not until all the fish died in the river______ how serious the pollution was.

　 A. did the villagers realize　 B. the villagers realized

　 C. the villagers did realize　 D. didn't the villagers realize

32.It was not until 1920______ regular radio broadcasts began

　 A. while　　B. which　　C. that　　　D. since

31.If we work with a strong will, we can overcome any difficulty, ______great it is

　 A. what　　 B. how　　 　C. however　　D. whatever

30.When a pencil is partly in a glass of water, it looks as if it______.

　 A. breaks　　　　　 B. has broken

　 C. were broken　　　　D. had been broken

29.She thought I was talking about her daughter, ______, in fact, I was talking about my daughter

　　　 A whom　　　　　　　　　　 B where　　　　　　　　　 C which　　　　　　　　　　　　 D while

28.Although he is considered a great writer, ______.

　　　 A his works are not widely read　　　　　　　　　 B but his works are not widely read

　　　 C however his works are not widely read　　 D still his works are not widely read

27.It was not until 1920 ______ regular radio broadcasts began

　　　 A while　　　　　　　　　　　 B which　　　　　　　　　 C that　　　　　　　　　　　　　　 D since