“May I borrow your paper？” “ ______.”
| A．By all means | B．Never mind |
| C．You are welcome | D．Don’t mention it |
All living organisms (有机物), __________ their unique identity, have biological, chemical and physical characteristics in common.
| A．as a consequence of | B．for the sake of | C．in terms of | D．regardless of |
I have no idea when the bus will arrive. I for at least half an hour in such cold weather.
| A．had waited | B．have waited | C．will wait | D．have been waiting |
John has got a fever these days, and he says he doesn’t want to see a doctor, but I’m afraid he has no .
| A．alternative | B．extra | C．treatment | D．possibility |
---Dad, I'm confused what I am going to do after graduation.
---You'd better first explore your talents and get to know yourself so as to find out __________ your real interests lie.
| A．what | B．where | C．which | D．how |
When I was at college I ______ three foreign languages, but I _____ all except a few words of each.
| A．spoke; had forgotten | B．spoke; have forgotten |
| C．had spoken; had forgotten | D．had spoken; have forgotten |