I just wonder ______ that makes him so excited.
| A．why it does | B．what he does | C．how it is | D．what it is |
The manager, ____ it clear to us that we should stick to the plan, left the meeting room.
| A．who has made | B．having made |
| C．made | D．making |
Could it be in the room____ we had a talk last night ____ you left the key?
| A．that; where | B．where; when |
| C．where; that | D．in which; where |
—I failed again. I wish I ____ harder.
---But you ____.
| A．had worked; hadn’t | B．worked; don’t |
| C．worked; didn’t | D．had worked; didn’t |
While there are quite a few differences in the education system, in many countries education is ____.
| A．usual | B．regular |
| C．normal | D．universal |
Some plants are vey ____ to light; they prefer the shade.
| A．sensible | B．available |
| C．adjustable | D．sensitive |