8.—Do you know _______?

—Next year.

A. when he came here

B. when did he come here

C. when he will come here

D. when will he come here

9. You will be able to get good marks _______.

A. until you follow your teachers’ advice

B. if you do some revision every day

C. before you begin to study hard

D. while you are doing your homework by yourself

10.—I don’t know if his uncle _______.

—I think he _______ if it doesn’t rain.

A. will come; comes

B. will come; will come

C. comes; comes

D. comes; will come

11. There isn’t any water in the bottle, _______?

A. is it

B. is there

C. isn’t it

D. isn’t there