–Has your father returned from American yet ?
--Yes, but he ____here for only 3 days before his company sent him to Australia.
| A．was | B．has been | C．will be | D．would be |
I’ll do whatever I can _________ my English.
| A．improve | B．to improve | C．improving | D．to improving |
You must follow the directions exactly, and if you should become_______ , you must take the time to go back again and read them over.
| A．confused | B．to be confused | C．to confuse | D．confusing |
He narrowly missed being seriously hurt, if not______, by the explosion.
| A．killed | B．being killed | C．be killed | D．to be killed |
—Professor, do you have something _______ at this moment?
— No, thanks. I’ll call you if any.
| A．to be typed | B．to type | C．typing | D．typed |
I have no one ______ me, for I am a new comer here.
| A．help | B．helping | C．to help | D．to have helped |