6. --You don't look so well, Mary. What's the matter with you?--Why? ___________. A. I'm quite myself　　　 B. Fine, think you　 　　C. I felt bad　　　 D. I'm not myself

5. China has hundreds of islands, ___________ is Taiwan Island.

A. among them the largest　　　　　 　B. and the largest of which

C. and the largest of them　 　　　　　D. but in which the largest

4. You must have waited here for a long time, ___________you?

A. mustn't　　 　　B. didn't　　　 　C. haven't　　　 　D. hadn't

3. Nearly________ of the surface of our planet is covered by water.

A. seven-ten 　　B. seven-tenth　 　C. seven-tenths 　D. seventh-ten

2. It's said that __________ is going to give us a lecture.

A. an American famous young　　　　　　 B. a famous American young

C. a famous young American　　　　　　 D. a young famous American

1. We had ___________ wonderful time _________ the party_______ other day.

A. a, on, the　　 B. /, at, on　　 C. a, at, the　　 　D. /, on,/

29．A本题较难，可以用排除法。as在此题中既作连词，又充当后半分句中的成分。that不能用于“，”之后，so在题中不正确，it在句中两分句缺少连词，故选A

28．B only too…to，just too…to，simply too…to等，后面的动词不定式不表否定意义。A、C两项不合题意，可排除；D项much不修饰一ad这样的普通形容词原级。

27．C　 整个句子前半部分为虚拟语气，与过去的动作相反，而后半部分but提醒我们动作是事实，所以用was。

26．D本题是词语的辨析。day by day意为“天天”，强调事物的不断更新，day after day也为“一天天”，但强调事物的重复或反复。