–The classroom is_____ clean_____ it was yesterday.
--Sorry, I forgot to clean it.
A．as, as B．so, as C．not so, as D．more, than
Every day the boss makes him_____ 12 hours.
A．work B．to work C．working D．works
---Mr Ding,I have some trouble ______the passage!
----Remember _____it three or four times at least !
A,to understand ,reading B.understanding ,reading
C.understanding ,to read D.to understand ,to read
There are so many kinds of pens in the shop ,I can’t decide ______.
A．when to buy B．where to buy C．what to buy D．which to buy
The young man used to _____to work, but he is used to ______to work now.
A．drive, walking. B．drove, walked. C．drive, walks. D．driving, walk
---Please turn off the light.
---OK, Mom. I won’t leave the room ______ the light _____.
A．when; on B．with; on C．with; off D．when; off
