31. Researchers now have some proofs ______ reading the Roman alphabets and Chinese
characters uses different parts of brain.
where                    B. when                C. which               D. that

35．_____ she was sick, I was expected to take her place greatly surprised me, for I didn't have much work experience.

27．The small town_____ we spent our holiday last month lies in_____ we think is now part of Chengdu.

31.   You see the lightning _____ it happens, but you hear the thunder later.

84.It is theability to do the job _____ matters not where you come from or what you are.

　　
82.I was only when I reread this poems recently _____ I began to appreciate their beauty.

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

　　
78.It was not _____ she took off her glasses _____ I realized she was a famous film star.　　

74.Was it during the Second World War_____ he died?　　　　　　　

68 It was at four o'clock in the afternoon ____ he and his grandpa reached the museum in Guanghan.