You could tell that he had really done his homework.

　　你能看得出他確實做好了充分準備。

　　He let us off homework today.

　　他今天免了我們的家庭作業。

　　I still haven't done my geography homework.

　　我還沒做完地理科家庭作業呢。

　　How long did you spend on your homework?

　　你做家庭作業用了多長時間？

　　I've got a lot of homework tonight.

　　我今晚有很多家庭作業要做。