____ is to be done is ______ to carry it out smoothly since the decision has been made．
| A．What; how | B．Where; how | C．When; what | D．Where; what |
Could you drive me to the bookstore at noon if________?
A. it’s convenient of you
B. it’s convenient to you
C you are convenient
D. you will be convenient
Children should be taught at an early age to keep ______even in a difficult situation.
| A．accurate | B．firm |
| C．optimistic | D．enjoyable |
What great trouble we had _________ where his house was.
| A．in finding | B．to find |
| C．find | D．found |
--Shall I open the window?
--I’d rather _________.
| A．you had better not | B．you don’t |
| C．you didn't | D．you shouldn’t |
_____ to strong sunlight for a long time will do harm to your skin.
| A．Being exposed | B．Having exposed |
| C．Exposing | D．Exposed |