Jack wasn't saying anything，but the teacher smiled at him ________ he had done something very clever.(2011·湖南)
| A．as if | B．in case | C．while | D．thought |
Once a decision has been made, all of us should ____it.
| A．direct to | B．lead to | C．stick to | D．refer to |
Only then, _____we ____that the trapped miners were in danger when the flood water dripped into the tunnels.
| A．have; realized | B．did; realize |
| C．do; realize | D．had ; realized |
–We spent all our money because we stayed at ____most expensive hotel in town.
-- Why didn’t you stay at ____cheaper one ?
| A．the ; the | B．the ; a | C．a ; a | D．a ; the |
The open university was started in order to help those who ____ having a university education when they were young.
| A．stopped | B．wasted | C．missed | D．ceased |
. –Mike got “ C” in his history test.
--_____? He has been working so hard at it .
| A．So that | B．How come | C．What for | D．Why not |