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　　2021年湖南统招专升本《大学英语》作业题(三)

　　1. It was very kind of you to do the washing-up, but you_________it.

　　A.mustn’t have done B.wouldn’t have done

　　C.mightn’t have done D.didn’t have to do

　　2. It was essential that the applications forms_________back before the deadline.

　　A.must be sent B.would be sent C.be sent D.were sent

　　3. We_________our breakfast when an old man came to the door.

　　A.just have had B.have just had C.just had D.had just had

　　4. Professor White wrote a ________ report yesterday.

　　A. two-thousand-words B. two-thousands-word

　　C. two-thousand-word D. two-thousands-words

　　1.【答案】D.

　　have to do必须做.need to do需要做.don t have to do和don’t need to do表示“做..是不必要的”，属于固定用法,从前面的Was看出是过去时态，所以后面用didn’t。

　　2.【答案】C.

　　It be essential that后面一定用虚拟语气，且句子谓语动词固定为(should)+ 动词原型。

　　3.【答案】D.

　　本题考查过去完成时态的用法.由句意可知"吃饭"在"来"之前，表示"刚吃过饭，老人就来到了".

　　4.【答案】C.

　　句意：我们每个人必须每周写一篇两干单词的报道.

　　everyweek:每周.本题考查合成形容词，里面的名词应该用单数形式，two- thousand-word:两千单词的adj.