Sam worked until midnight yesterday. So he feels ______ today.
| A．sleep | B．asleep |
| C．sleepy | D．sleeping |
He failed the exam ________he was too careless.
| A．because | B．but |
| C．so that | D．so |
You can’t do _______ before you finish your homework.
| A．something | B．anything |
| C．nothing | D．nobody |
Mr. Lee has worked in a bookshop _______he left college in 2007.
| A．until | B．while |
| C．since | D．from |
Mike was ill yesterday,_______ he didn’t go to school.
| A．if | B．but |
| C．so | D．or |