16. All our work will have been accomplished by the time the contract ______.
A. signs
B. has signed
C. is signed
D. was signed
【答案】C。解析：考查时态语态。句意：我们所有的工作会到签合同时完成。根据前面的will可知合同尚未签订，故排除B、D两项，又因为contract与sign之间为被动关系，故答案选C。
17. ______ the fact that we have made mistakes in our work.
A. It is not to deny
B. There’s no denying
C. Not to deny
D. There is not to deny
【答案】B。解析：考查固定句型。句意：我们工作中出了差错，这个事实不可否认。There’s no denying为固定句型，意为“不可否认”。故答案选B。
18. It is important that the hotel receptionist ______ that guests are registered correctly.
A. has made sure
B. made sure
C. must make sure
D. make sure
【答案】D。解析：考查虚拟语气。句意：酒店接待员应确保客人登记正确，这很重要。句型“It is + adj. + that...”此句型在表示建议、命令、要求等意义时，that从句应使用虚拟语气，即从句谓语动词用“should +动词原形”，should可以省略。常用于这种句型的形容词有：necessary, essential, better, best等。
19. He was given two offers. However, he can’t ______ his mind which offer to take.
A. bring up
B. make up
C. make
D. set
【答案】B。解析：考查固定搭配。句意：他接到了两个offer，但他不能决定选哪个。make up one’s mind下决心。bring up提出;养育;C、D均不与mind搭配。
20. Continuous work will ______ your energy and make you exhausted.
A. leave
B. hold
C. apply
D. drain
【答案】D。解析：考查动词词义辨析。题中说连续不断地工作会对人的精力产生的影响，明显可以排除leave，留存精力;apply for申请，apply to应用;hold维持精力。drain指表意指排干，排尽水，引申为“耗尽”，故D项符合题意。
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