Question

【题目】根据所学内容填空。

1. Do cross the street ______the traffic lights or safety crossing.

2. Don’t _____on the stairs.

3. Do ______at the traffic lights or safety crossing.

4. Don’t _____ tall trees.

5. Don’t run ______the stairs.

Answer 1

【答案】1. at 2.run 3. cross the street 4. climb 5. on

【解析】

略