用before+ing形式与after+ing形式造句
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)
答
I had read a few page of my book before I went to sleep .
We were very tired after walked for three hours.
Let's go out.（这叫你变啥?不懂题意.只能先写成这样了）