He had to retire(退休)early _____ bad health.
| A．as a result | B．because |
| C．so | D．because of |
Bob did everything than the other three students. Our teacher chose him to be our monitor.
| A．much careful | B．much carefully |
| C．much more careful | D．much more carefully |
―Must I report the situation of the new company to the manager now?
―No, you . You are tired and you can do it after you have a good rest.
| A．mustn’t | B．needn’t | C．shouldn’t | D．can’t |
―Is there any fruit in the big paper box, Daddy?
―. Let’s buy some on the way home.
| A．None | B．No one | C．Nothing | D．Nobody |
Don’t give up working hard, you’ll be successful some day.
| A．or | B．and | C．but | D．so |
Simon will never forget what happened the evening of his birthday last year.
| A．to | B．in | C．of | D．on |