问题描述：
用before+ing形式与after+ing形式造句
I read a few page of my book.Then I went to sleep.(Before) We walked for three hours.We were very tired.(After) Let’s have a cup of coffee.Then we’ll go out.(Let’s)
I read a few page of my book.Then I went to sleep.(Before) We walked for three hours.We were very tired.(After) Let’s have a cup of coffee.Then we’ll go out.(Let’s)
问题解答：
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