1. It is reported that by the end of next month the bridge ____. 
A. will be built     B. has been built     C. will have been built     D. will have built

解析:由by the end of判断应选完成时,next month 是将来标志,故选择C.  

2. Our teacher has a strict rule. She said yesterday that all the students ___ to class on time. 
 A. came     B. might come     C. must come     D. must have come  
3. One of the requirements for a fire is that the material ____ to its burning temperature?
A. be heated   B. is heated     C. would be heated    D. to heated
解析:A)项requirement 这个词和idea, suggestion等一样,要求从句里的谓语动词用(should)+动词原形。故选A 
4. ____ what may, we’re not going to make any concessions to his unreasonable demands.? 
A. Come          B. Came        C. Coming         D. Having come
【难点】come what may 是一个固定的用法,其中come总是用原形动词,在这一用法中,主谓必须倒装,此句相当于whatever may happen (不管发生什么情况)。 
5. Every means ____ tried out but never with success, as far as my knowledge goes. 
A. is          B. are         C. has been             D. have been
6. He concluded his speech with a remark that failure ____the mother of success.
A. is         B. were          C .was        D. must be .
7. The design liaison meeting ____ ten days by the time it ends. 
A. must have lasted     B. will have lasted    C. would last    D. has lasted 
【难点】by the time意指no later than the moment that something happens,常与过去完成时和将来完成时连用。
8. ____ before we depart the day after tomorrow, we should have a wonderful dinner party.
A. Had they arrived       B. Would they arrive       C. Were they arriving     D. Were they to arrive
8. D) 
【难点】表示将来不可能发生的事实,常用虚拟语气,主句的谓语为should+动词原形(适用于第一人称主语)或would,could,might+动词原形(适用于其余人称主语);而条件句的谓语应该用should+动词原形,were to+动词原形或直接用动词的过去时(如be 改用were)。
9. As ___ clear from his manners, he is a teacher.
 A. being      B. is       C. to be      D. been 

 9. B) 
10. Great as Newton was, many of his ideas ____ today and are being modified by the work of scientists of our time. 
A. are to challenge          B. may be challenged      C. have been challenged      D. are challenging 
 10. C)