---Don't stay up late because you must get up early tomorrow.
---Don't worry, I getting up early.
| A．used to | B．am used for |
| C．am used to | D．didn't use to |
—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 |