Pollution is a serious problem. Scientists have _____ some good ways to save it.
| A．come up with | B．come on | C．come out | D．come up |
I can’t sing Japanese songs very___________.
A、well B、much C、good
Maybe he can____________in their basketball team.
A、is B、be C、are
It’s time ___________lunch.
A、to B、for C、have
Who wants_________the swimming club?
A、to joins B、join C、to join
Let’s go and play_______ ping-pong. I don’t want to play_______violin.
A、a, the B、the, a C、X, the