Unit 8 Transportation
Part 2
I. 用must,have to 和 mustn’t的正确形式填空。
1. To buy a ticket, you _____ line up at this window.
2. To get to the train, you _______ put your ticket in this machine here.
3. Don’t stand close to the tracks. You _______ stand behind this yellow line.
4. You _______ take animals on the subway. It’s against the rules.
5. You ______ give rides to other people. It’s dangerous.
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II. 完成句子。
1. 过马路时要走斑马线。
When you _____ ____ ______, you ____..