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 The “Warning” reads: “Under no circumstances _____ be kept near fire!”

      A. the chemical should                  B. the chemical shouldn’t

      C. should the chemical                  D. should the chemical not

 They wonder _____ someone who wants to be a telecom engineer should study subjects such as history, literature, philosophy, etc.

      A. what                     B. that             C. how                         D. why

 Now that we have settled the question of feasibility（可行性）, let’s proceed to the next one ─_____ raise the fund from the bank.

     A. whether should we          B. that we should    C. whether we should  D. that should we

 ______ by greater demand of vegetables, farmers have built more green houses.

A. Driven                   B. Being driven    C. To drive               D. Having driven

 Most probably it will be another 7 hours _____ you can have next meal, so each of you must have your stomach full.

     A. since                B. when          C. after                    D. before

 The Campaign of Occupying Wall Street is a reflection of the contradictions(矛盾) _____ exist in the society of the US.

A. on which             B. that           C. where            D. whose

 We had better not bother our professor these days, for he is awfully busy preparing a report _____ at an international conference next month.

     A. being delivered         B. to be delivered  C. to deliver             D. delivered   

 How we express our ideas sometimes means more than _____ we mean to say.

A. what                 B. which               C. that               D. why

 It is recommended that the exploration team take with them an extra set of equipment _____ unexpected emergency occurs.

     A. in that                 B. so that               C. now that           D. in case

The possibility of a murder _____, the police have set about looking for the clues to her suicide.

　　 A. to be excluded　 　　　　　　　　　　　　　　　　 B. to exclude　　　

C. having excluded　　 　　　　　　　　　　　　　 D. having been excluded