You___hand it in at once, you may hand it in tomorrow.
| A． needn't | B．may not | C． can't | D．must not |
_________ environmental damage is done, it takes many years for the ecosystem to recover.
| A．Even if | B．If only | C．While | D．Once |
----Where did you get to know her?
----It was on the farm ________ we worked.
| A．that | B．there | C．which | D．where |
----What a mistake!
----Yes, I _______ his doing it another way, but without success.
| A．was suggesting | B．will suggest |
| C．would suggest | D．had suggested |
Your daughter ______ to be a famous musician, so you should keep her practicing the piano.
| A．promises | B．agrees |
| C．expects | D．pretends |
----Can I help you with it?
----I appreciate your ___________, but I can manage it myself.
| A．advice | B．question |
| C．offer | D．idea |