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“2021年成人英语三级考前练习题(二十)”内容如下，来做题吧!
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2021年成人英语三级考前练习题（二十）
2021年成人英语三级考前练习题汇总
1. Tailor looks sleepy. He must______ to bed very late last night.
A. had gone B. have gone C. be going D. go
2. I_______ yesterday, but I was suspended by an unexpected visit.
A. came B. did come C. was to come D. come
3. I don't know what Jeanie_____ at this time tomorrow.
A. does B. is doing C. will be doing D. will do
4. Hardly______ when the bus suddenly pulled away.
A. they had got to the bus stop B. had they got to the bus stop
C. did they get to the bus stop D. they got to the bus stop
5. Mother doesn't know much time I have spent in watching TV; if she ever found out ,I'm sure_______.
A. she'd never forgive me B. she never forgive me
B. she'll never forgive me D. she does never forgive me
6. The teacher told the students that the Earth_______round the Sun.
A. moves B. moved C. has moved D. has been moving
7. While the secretary_______ his desk, he found the long lost report.
A. had been cleaning B. is cleaning C. has been cleaning D. was cleaning
8. As soon as he______ his error, Rockfeller made the necessary corrections to his data collected.
A. discovered B. has discovered C. discovers D. had discovered
9. Fred believed that his friend_______ by his employer a month or so ago.
A. had been promoted B. has been promoted C. has promoted D. had promoted
10. I think I'll wait until the mail______ .
A. should come B. is coming C. comes D. will come
参考答案及解析：
1.B Tailor(人名)看起来有些困，他一定是昨天晚上睡觉太晚了。用must have done 这个结构，表示对过去发生动作的一种肯定性的猜测。
2.C 过去将来时态。be to do 在这里表示计划中的行动。Suspend 耽搁，暂停。
3.C 将来进行时态。我不知道明天这个时候Jeanie 在干什么。at this time tomorrow，信号词，说明是明天的这个时候发生的动作，所以是用将来进行时态。
4.B hardly……when……(一……就……)， hardly后应当用过去完成时，when 后面用一般过去时。hardly 的特殊用法，在其后面跟倒装语序，所以选B。
5.A 过去将来时态。Forgive 原谅，She’d相当于：she would. 妈妈不知道我看电视花费了多长时间，如果她知道的话，我相信她将永远不会原谅我。
6.A 客观存在，真理性的，规律性的，没有时态变化，都用一般现在时。
7.D 过去进行时态。while是一个信号词，表示一个时间点。
8.D 过去完成时态。发现错误这个动作发生在纠正数据那个动作之前，而改正数据的动作用的是过去时态，所以，发生在过去的过去的动作就用过去完成时态。error 错误。correction 改正，是名词。data 数据。
9.A employer 雇主，老板;or so 大约;promote 提升，升职。通过believed我们看出来，这句话的语境是过去时，提升这个动作发生在过去的过去，用过去完成时。答案就看A，D两个选哪个呢?他的朋友是被提升，所以用被动语态，显然用A被动语态。
10.C mail 邮件，信件。这是用现在时表示将来时的一种用法。信号词是until.
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