We are confident that the environmenr by our further efforts to reduce pollution
| A．had been improved | B．will be imroved | C．is improved | D．was improved |
____ students are practicing ___ English with each other at the English corner.
| A．The number of; to speak | B．A great deal of; spoken |
| C．A great many of; speak | D．A number of; speaking |
My father served in the army in _______ when he was in _____.
| A．1950’s; twenties | B．the 1950s; his twenties |
| C．1950’s; the twenties | D．1950s; the twenties |
Only when finished his own work, ask him to help you.
| A．has he, can you | B．he has, can you | C．has he, you can | D．he has, you can |
The reason he missed this class was quite different from the one that you explained to me.
A.that B.of which C.why D what
It was ______ that they went for a drive in the countryside.
| A．such a fine weather | B．so fine a weather | C．such fine weather | D．so fine weather |