While they were doing their homework, I was doing the laundry.
他们在做家庭作业的时候，我正在洗衣服。
Lots of students are too busy doing their homework to help out with housework.
很多学生都忙着做作业，没有时间帮忙做家务。
The country's achievements in education have other nations doing their homework at Kirkkojarvi Comprehensive School in Espoo.
该国在教育方面取得的成就让其他国家在埃斯波的科克雅尔维综合学校下功夫。
They are doing their homework.
他们现在正在做家庭作业。
They were doing their homework.
他们正在做他们的家庭作业。
They're doing their homework now.
他们现在正在写作业。
They are doing their homework now.
他们现在正在做作业。
All of them are doing their homework.
他们都在做家庭作业。
The children are doing their homework.
孩子们正在作他们的作业。
Are they doing their homework or playing?
他们在做作业还是在玩儿。
They have finished doing their homework.
他们已经做完作业了。
The children are busy doing their homework.
孩子们忙于做作业。
The children are all doing their homework.
孩子们都在做作业。
They can't have been doing their homework.
他们不可能正在做作业。
They were doing their homework at that time.
在那时，他们正在做家庭作业。
They are doing their homework in the classroom.
他们正在教室里做家庭作业。
They have been doing their homework for 4 hours.
他们已经做了4个消失作业了。
And, sing karaoke instead of doing their homework.
唱卡拉ok，就是不做作业。
But this evening, they are not doing their homework.
但是今天傍晚，他们没有做作业。
It will be weeks before they finish doing their homework.
要过好几周他们才能完成家庭作业。
Some children are playing, others are doing their homework.
一些孩子在玩，一些孩子在写作业。
The children spent the whole afternoon doing their homework.
孩子们花了整个下午做家庭作业。
The smarter ones avoid that pitfall by doing their homework.
明智的人会通过准备工作来避免类似错误的发生。
They are doing their homework instead of tidying up the room.
他们在做作业而不是在打扫房间。
What are Nancy and David doing? They are doing their homework.
南希和大卫在干什么？他们在做家庭作业。
Some children are playing, the others are doing their homework.
一些孩子在玩，其余的在写作业。
The boys kept [went] on doing their homework in spite of interruptions.
尽管有干扰，孩子们仍继续做自己的作业。
While her children were doing their homework, she was doing some housework.
当她的孩子们在做作业时，她在做家务活。
Jiang, in her forties, often criticized them for not doing their homework well.
她们说，姜老师还经常以作业没做好为由批评她们。
Jiang, in her forties, often criticized them for not doing their homework well.
她们说，姜老师还经常以作业没做好为由批评她们。
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