一、根据汉语提示，用“疑问词＋动词不定式”完成句子。
1.____________________________(如何使用这个机器)is a question.
2.The question is____________________________(什么时候去那儿).
3.She can't decide____________________________(该买哪本书).
4.I don't know____________________________(做什么)next.
5.He wants to know____________________________(在哪里选)his coat.

1. How to use the machine 2. when to go there
3. which book to buy 4. what to do 5. where to choose

二、用must或have to的适当形式填空。
1.You________________wait a long time for a bus because it is foggy today.
2.When you go abroad, you________________take care of your health.
3.You________________not get off until the bus stops.
4.You________________tell your parents when you play football outside late.
5.My bike was broken, so I________________go to school on foot.

1. have to 2. must 3. must 4. must 5. had to

三、根据句意及所给中文提示、首字母或英文解释，写出句子所缺单词，每空限填一词。
1.If you want to keep the book for another week, you have to____________________(to make sth. valid for a further period of time)it.
2.You should read some____________________(评论)about the film before watching it.
3.You should____________________(to give back)the books to me on time.
4.Jack____________________(交)a letter to his best friend, Amy, a moment ago.
5.Sometimes, you won't know the true value of a moment u____________________it becomes a memory.

1. renew 2. reviews 3. return 4. handed 5. until

(　　　)1.(2024·江苏宿迁宿豫区一模)There is no difference between the two words. I really don't know .
A. what to choose
B. which to choose
C. to choose which
D. to choose what

1. B 【点拨】根据“I really don’t know”可知，空处是宾语；结合选项可知，空处用“疑问词＋动词不定式”作宾语，所以应填“which (one) to choose”。故选 B。

(　　　)2.According to the rule, children under the age of 12 ride a shared bicycle.
A. can't
B. needn't
C. mustn't
D. may not

2. C 【点拨】句意：根据规定，12 岁以下的儿童禁止骑共享单车。can’t 不能；needn’t 不必；mustn’t 禁止；may not 可能不。故选 C。