Unit 4 Wildlife Protection reading课时作业

Ⅰ.单句改错

　　1．Yesterday I met Tom. We haven't seen for years.

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　　2．She is sending text messages just now，so she didn't see me.

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　　3．I had gone to London before.

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　　4．Jane is here，but I didn't hear she has come until this morning.

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　　5．During my stay in Beijing，I had visited all the places of interest.

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　　6．In the past，I have met a lot of difficulty.

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　　7．He told me in the past two years he gained a lot.

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