Tony is ________ to go to school.
| A．enough old | B．old enough |
| C．enough young | D．young enough |
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 |