1、 Mars ________ longer to revolve on its axis than Earth.

2、 Alice _______ a shy girl. However, after some time in a drama club, she _______ sociable now.

3、 I ________ if you _______ give me some advice on how to overcome these obstacles.

4、 Alina _______ in Hangzhou four years ago, and now she ________ in Shanghai.

5、 Daisy often _______ papers in the library before graduation. Now, she often _______ novels in the bookstore.

6、 The old woman _______ on the bridge but she _______ anything unusual.

7、 My uncle was busy packing, for he ________ that night.

8、 He - his experiment at the moment, but half an hour ago he - some cleaning. .

9、 You are supposed to get everything ready for this meeting, as the CEO in a few minutes.

10、 George is enjoying his holiday in the Arctic as he ______ touristy places.