家庭作业要按时完成。
我猜老师会给我们布置一些作业的，所以我一定要按时完成。
I guess teachers would leave us some homework, so I must finish them.
一定要按时完成作业。
早上起床后要练习朗读和口语，课堂上要积极发言，放学后要按时完成听、说、读、写等作业。
He should spend a lot of time reading or practising English after he gets up in the morning. He should be active in class.
早上起床后要练习朗读和口语，课堂上要积极发言，放学后要按时完成听、说、读、写等作业。
He should spend a lot of time reading or practising English after he gets up in the morning. He should be active in class.
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