2 . Tom turned on the computer and started ________ the e-mail.

A．write

B．writes

C．wrote

D．writing

3 . learning, piano, I, I, started, when, six, was, the (.)
___________________________________.

4 . Luckily, the girl woke up when there was a fire.

A．started sleeping

B．stopped sleeping

C．enjoyed sleeping

6 . She started ____________ the kitchen as soon as she got home. (clean)

7 . 因为手机给学生学业带来很多影响，越来越多的学生开始拒绝手机。
More and more students start ________ ________ smart phones because they bring lots of trouble to students’ schoolwork.

8 . before, exercising, is, late, it, too, start
____________________.

9 . My father ______ until 11:00 p.m. last night.

A．kept working

B．will work

C．works

D．started working

10 . 我走进教室时，老师已经开始讲课了。
By the time I ________ ________ class, the teacher ________ ________ ________ already.