The president ordered that the stadium______finished before the National Day but the engineer knew very clearly that it was almo

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问题 The president ordered that the stadium______finished before the National Day but the engineer knew very clearly that it was almost impossible for it______in so short a time.

选项 A、be: to do
B、be: to be done
C、should be: to be doing
D、will be: to have done

答案B

解析 句意:总统下令体育场必须在国庆日之前完成,但是工程师很清楚在这么短的时间内是不可能完成的。order表命令时,后面的宾语从句要用虚拟语气,结构为(should)+动词原形。it is impossible for sb.to do sth.是固定句型,表示“做某事是不可能的”。
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