-- ______ classes are there in your school?
--Fifty.
| A．How many | B．How old |
| C．How | D．What |
What a surprise to see you here! Whenyouback?
| A．do; get | B．did; get |
| C．have; got | D．will; get |
—Have you got any information about your missing dog?
—. We are still looking for it.
| A．Not yet | B．I hope not |
| C．I think so | D．Of course |
There’s no light on—theybe at home.
| A．can’t | B．mustn’t |
| C．needn’t | D．shouldn’t |
Jim is always so busyhe has little time for his family.
| A．if | B．until |
| C．that | D．which |
I asked two students the way to the post office, butof them knew.
| A．both | B．either |
| C．none | D．neither |