---Will you be ____ this afternoon , John?
----It depends. I’ m afraid I’ll be called in by my boss.
| A．suitable | B．available | C．accurate | D．convenient |
____ I say Clancy is a smart boy, he still needs to work hard to achieve his goal．
| A．Then | B．When | C．While | D．As |
She ___ volleyball regularly for many years when she was young．
| A．was playing | B．played |
| C．has played | D．had played |
I really appreciate ____ to help me with my maths, but I’m afraid that I have no time this week．
| A．you to offer | B．it you offer |
| C．your offering | D．this you are offering |
_____ all my teachers, Mr． Moore is the one who impresses me most．
| A．At | B．On | C．To | D．Of |
Unfortunately, ____ stone hit him on ______ head and he got injured．
| A．the; a | B．a; 不填 | C．a; the | D．the ; the |