将下列句子改为复数形式
问题描述：
将下列句子改为复数形式
He is a policeman.
He has a good friend.
what is that?
This is a tomato.
答
1 They are policemen.
2 They have good friends.
3 What are those ?(注：that的复数是： those )
4 These are tomatoes.
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