1. —How can we cross the road safely?

—First, ________. Next, ________. Then, ________. Finally, ________.

① you can cross the road

② you must look at the traffic lights

③ you must look for a zebra crossing

④ you wait for the green man

A. ①②③④ B. ③②④① C. ②③①④
【考点】
常识;
【答案】

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