The boy is playing____ piano. He isn’t playing ___ basketball.
A. a, a B. the , / C. /，/
--- I’m going on a trip to Beijing soon. ---_______.
| A．That’s all right. | B．Sorry to hear that |
| C．Be careful. Don’t be too happy. | D．Have a good trip. |
— What do you like to do in your leisure time?
— I enjoy ____ with my friends.
talk B. to talk C. having talked D. talking
I can’t understand ____ you’re talking about.
what B. that C. if D. because
--- I don’t know if he ____. --- He’ll come if it ___.
| A．comes, won’t rain | B．will come, doesn’t rain |
| C．comes, doesn’t rain | D．will come, won’t rain |
It has been five years ____ I came to this school.
for B. since C. whether D. when