1.他经常坐地铁去上学。

    He usually goes to school by subway./ He takes the subway to school.

2. Maria通常骑自行车去上学。

    Maria always goes to school by bike./Maria rides a bike to school.

3.我们想了解一下美国学生的学校生活。

    We want to know something about the school life of American students.

4.他们多久举行一次球赛呢？

    How often do they have ball games? (Twice a week.)

5.你经常在图书馆阅读吗？是的。/不是。

   Do you usually read books in the library? Yes, I do./ No, I don't.

6.工作第一。

   Work must come first.

7.她与父母亲吃早餐。

    She has breakfast with her parents.

8.她正在做什么？她在阅读。

   What is she doing? She is reading.

9.他此时不在睡觉。

   He isn't sleeping at the moment.

10.你正在看电视吗？是的。/不是。

    Are you watching TV now? Yes, I am./ No, I'm not.

(答案不唯一)