第47页 - 亮点给力提优课时作业本六年级英语译林版

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You should cross the road at the zebra crossing.

Don't climb the tree.It's very dangerous.

Don't swim in the lake. The water is too deep.

Look out for the cars. Don't play football on the road.

Don't talk on the phone when you are riding a bike.

It's not safe.