He's been collecting kites he was ten ye

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问题选择题

He's been collecting kites he was ten years old. [ ]

A. since

B. when

C. for

D. at

答案

答案：A

填空题

选择正确的短语填空。

do some reading take photos clean the classroom

no smoking wash hands instead of stay out

1. Chinese usually don't ______ on the first day of the Spring Festival.

2. I went to see a movie ______ a play.

3. We can use cameras to______ .

4. Mother told me not to ______ after 10.

5. Before meals, you'd better______ .

6. What does "______" mean?It means "not smoke".

7. Today it's my duty to ______.

单项选择题

引起制动力不足故障的原因之一是制动蹄摩擦片与制动鼓摩擦面不能（）地接触。

A.上下均匀

B.中部均匀

C.全面均匀

D.均匀可靠