单句语法填空

1．They can't wait          (see) the new manager.

2．          is nice that she helped me with my homework.

3．I will not buy the tickets           I hear from you.

4．My mother           (leave) for Hong Kong next week.

5．Like ancient sailors，birds can find their way           (use) the sun and the stars.

6．Her husband died ten years ago，          (leave) her with three children to look after.

7．The sun heats the earth，          is very important to us.

8．I don't know the time          the plane takes off.

9．Last night，I was doing my homework          my brother was playing computer games.

10．We must strike           the iron is hot.