–Mum, the train is leaving in eight minutes. I go now.
–Okay, Jim, call me when you get there.
A. may B. must C. can
—Mark，you look so tired．
—Oh，I didn’t go to bed________it was 12 o’clock last night．
| A．unless |
| B．after |
| C．until |
| D．as |
Lily is over there，and she is talking to a friend________the phone．
| A．on |
| B．in |
| C．by |
| D．for |
I didn’t stop working________it was quite late．
| A．when |
| B．after |
| C．before |
| D．until |
Sometimes most of us probably are angry________our friends，parents or teachers．
| A．to |
| B．with |
| C．at |
| D．for |
David is________than his brother．So he always makes more mistakes．
| A．careful |
| B．more careful |
| C．less careful |
| D．the most careful |