At the Copenhagen conference, all the countries were called on to do all they could to control greenhouse gas emissions ______ it was too late.
| A．when | B．after | C．until | D．before |
.I’d like tolive in the house __________there is plenty of sunshine.
| A．to which | B．that | C．where | D．which |
We should try our best to __________those people after the disaster.
| A．break out | B．cheer up | C．break up | D．cheer on |
-When can you get my car repaired?I need it tomorrow morning.
-It__________be ready by 8:00.
| A．can | B．need | C．might | D．should |
.-Could I use your bike?
-Yes,surely you__________.
| A．might | B．will | C．can | D．should |
.Being a teacher for many years,he has learned a__________to remember students’names.
| A．idea | B．thought | C．trick | D．mean |