Ⅰ. 用方框中适当的疑问词完成句子
　　
what; when; which; where; how; who
1. I don’t know ________ to talk to and ________ to get help when I’m in trouble.
2. Kitty is the top student in her class but she doesn’t know ________ to make friends.
3. Helen can’t decide ________ to do first when she gets a lot of things to do.
4. Mary always doesn’t know ________ to speak in public.
5. Daniel can’t decide ________ to do his homework and ________ to play football.

1. who; where/how 2. how 3. which/what
4. what/how 5. when; when

Ⅱ. 同义句转换
1. Tom can’t decide when to play and when to study.
Tom can’t decide ________ ________ ________ play and ________ ________ ________ study.
2. Many students asked the teacher how they could solve their problems.
Many students asked the teacher ________ ________ ________ their problems.
3. Can you tell us who to talk to and where to get help when we have problems?
Can you tell us ________ ________ ________ talk to and ________ ________ ________ get help when we have problems?
4. I really don’t know which sweater I should choose.
I really don’t know ________ ________ ________ ________.
5. You should tell me where to find you when I arrive.
You should tell me ________ ________ ________ find you when I arrive.

1. when he can; when he should 2. how to solve
3. who we can; where we can 4. which sweater to choose 5. where I can

1. (2024·南通海门区一模)—I’ve left my computer at home. Can I borrow yours?
—If you ________. But I’ll use it again in about an hour, OK?
A. need B. can C. should D. must

D [解析]考查情态动词辨析。句意：——我把电脑忘在家里了。我能借用你的吗？——如果必须要借的话就用吧。但我会在大约一个小时后再次使用它，行吗？need 需要；can 能；should 应该；must 必须。根据“But I’ll use it again in about an hour, OK?”可知，此处指如果必须要借的话，要一个小时后还回来，因为后者还要使用。故选 D。

2. It’s time to decide what to do and ________.
A. how should I do it B. when to do
C. how I should do D. when to do it

D [解析]考查“疑问词+不定式”的用法。句意：是时候决定做什么和什么时候去做了。分析句子可知，设空处充当宾语成分，A 项语序有误，应改为 how I should do it；B 项 do 后缺少宾语，而疑问副词 when 不能充当 do 的宾语，故排除；C 项 do 后面缺少宾语，从句不完整。故选 D。

3. (2023·扬州宝应期末)—Miss Li, I don’t want to say sorry to Daniel.
—I’m afraid you ________. After all, you broke his glasses.
A. may B. have to
C. mustn’t D. needn’t

B [解析]考查情态动词辨析。句意：——李老师，我不想向丹尼尔道歉。——恐怕你必须这么做。毕竟，你打碎了他的眼镜。may 可能；have to 必须；mustn’t 禁止；needn’t 不必。根据“After all, you broke his glasses.”可知，对方必须要向丹尼尔道歉。故选 B。

4. —Mum, it is 8:00 already. Are you sure we can arrive at the cinema ________?
—Yes. It’s only ten minutes on foot away.
A. at a time B. at times
C. for some time D. on time

D [解析]考查固定搭配。句意：——妈妈，已经八点了。你确定我们能按时到达电影院吗？——是的。步行只需十分钟的距离。at a time 一次，单次；at times 时不时；for some time 一段时间，一会儿；on time 准时。故选 D。

5. —May I keep this book for a few more days?
—Yes. But you ________ lend it to others.
A. can B. mustn’t
C. needn’t D. wouldn’t

B [解析]考查情态动词。句意：——我可以多借这本书几天吗？——可以。但是你不许把它借给别人。can 可以，能；mustn’t 严禁，不许；needn’t 不必；wouldn’t 将不会。根据语境可知选 B。

6. (2024·遂宁中考)—Daddy, the Middle Autumn Festival is coming. Could you please tell me ________ for grandparents?
—You can buy some mooncakes, fruits and flowers for them.
A. how to buy B. what to buy
C. where to buy D. when to buy

B [解析]考查“疑问词+不定式”结构。句意：——爸爸，中秋节就要到了。你能告诉我给爷爷奶奶买什么吗？——你可以给他们买一些月饼、水果和鲜花。根据答语“You can buy some mooncakes, fruits and flowers for them.”可知，此处是询问应该买什么。故选 B。

7. (2024·连云港东海西部四校一模)Little Tom seems to know who ________ to get more pocket money.
A. can he talk to B. he can talk
C. to talk to D. to talk

C [解析]考查“疑问词+不定式”结构。句意：小汤姆似乎知道该找谁说话才能得到更多的零花钱。talk to sb 与某人谈话，to 不能省略，故排除 B、D 项；本句为 who 引导的宾语从句，需用陈述句语序，排除 A 项；此处使用“疑问词+to do”结构。故选 C。