The left-behind kids (留守儿童) can’t see their parents         the parents come back home from work.

The question is         that nobody can answer it.

根据提示填空（每空一词）
Lucy was sleeping while Mary ____ ____ (read) a magazine.

—We will certainly enter a good high school         we work hard.
—Yes. Our dream will come true by working hard.

—Mr. Li        to Mary carefully when I entered the classroom this morning.
—He is very patient        he is young.

My sister has learnt English        .

Jim has worked in Zhengzhou        he finished his college.

根据提示填空（每空一词）
他从18岁起就有汽车了。
He has had a car ____ ____ he was 18.

—Jimmy, it’s time to go to bed.
—Oh, I won’t do that         I finish my homework.

I won’t watch basketball matches          James is playing. He pays much attention to teamwork.