– Tom, you left the lights in the classroom on.
– Oh, sorry, I _________ to turn them off. Thanks for your reminding.
| A．will return | B．am going to return |
| C．am returning | D．return |
I think Tom, as the head of a big department, should either study regularly or ________ his job.
| A．quits | B．to quit | C．quitting | D．quit |
Mike was usually so careful, ________ this time he made a small mistake.
| A．yet | B．still | C．even | D．thus |
At school, some students are active ________some are shy, yet they can be good friends with one another.
| A．while | B．although |
| C．so | D．as |
Leave your key with your neighbor ________ you lock yourself out one day.
| A．as long as | B．even though |
| C．in case | D．as if |
You have to move out of the way ________ the truck cannot get past you.
| A．so | B．or | C．and | D．but |