1.Im doing my homework.我正在做作业。
2..He is playing with a toy.他正在玩玩具。
3.She is watching TV.她正在看电视。
4.Traveling by ship is comfortable. 乘船旅行很舒服。
5. My great pleasure is learning.我最大的快乐是学习。
6.Dancing is a very interesting thing.跳舞是一件很有趣的事情。
7.Skiing is a good sport.滑雪是一项有益的运动。
