二、连词成句。
1. what, does, she, want, to, be (?)


2. is, a, he, police officer (.)


3. nurses, sick, help, people (.)


4. my, is, uncle, a, farmer (.)


5. should, we, teeth, brush, our, three, times, a, day (.)

1. What does she want to be ?
2. He is a police officer.
3. Nurses help sick people.
4. My uncle is a farmer.
5. We should brush our teeth three times a day.

三、选择合适的句子补全对话（填序号）。

Mike: Hi, Tom. 1.
Tom: I want to be a doctor.
Mike: Why do you want to be a doctor?
Tom: 2. 3.
Mike: 4.
Tom: 5.
Mike: Because I like children. I want to help them learn.

1. C
2. E
3. A
4. B
5. D

【解析】
1. 根据Tom的回答“I want to be a doctor.”，可知空处是询问对方想要成为什么，对应选项C“What do you want to be?”符合语境。
2. 问句是“Why do you want to be a doctor?”，询问想当医生的原因，对应选项E“Because I want to help sick people.”可以回答原因。
3. 说完自己想当医生的原因后，Tom转而询问Mike的情况，对应选项A“What about you?”符合对话逻辑。
4. 结合后文Mike的回答提到自己喜欢孩子、想帮他们学习，说明Tom此时说出了自己的理想职业，对应选项D“I want to be a dentist.”不符合，此处是Mike后续的提问，对应选项B“Why do you want to be a teacher?”符合后续Mike的回答逻辑。
5. 空处是Tom的表述，引出Mike后续解释自己想当老师的原因，对应选项D“I want to be a dentist.”不对，结合对话逻辑，此处Tom先说明自己的想法后Mike提问，最终匹配所有空的正确序号为1.C 2.E 3.A 4.B 5.D。