根据每幅图画内容及问题，写出正确的答案．并把答案写在题后的横线上。

1．—What are your sisters doing?

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2．—What is David doing?

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3．—What are the two men doing?

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4．—What’s your uncle doing?

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5．—What are they doing?

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1、1．They arc boating．

2．He is riding a bike．

3．They are running．

4．He is cooking．

5．They are watching TV．