10．–Don’t put the waste on the ground, young man.
--Oh, I’m sorry. I ____ the dustbin there.
| A．didn’t see | B．hadn’t seen | C．can’t see | D．wasn’t seeing |
Mary, come here at 7; if not , we shall go to the park ______ you.
| A．except | B．besides | C．except for | D．without |
His father ________ a letter from him since he left without a word .
| A．hasn’t received | B．didn’t get |
| C．didn’t have | D．haven’t heard |
I was just about to leave ______the telephone rang.
| A．while | B．as | C．before | D．when |
— Why don’t you go into the office ,John
—I have ______ my office keys at home.
| A．forgot | B．kept | C．leaving | D．left |
The reason ______she didn’t come to school was_____
she had to look after her sick mother.
| A．because ; why | B．that ; because |
| C．why ; that | D．which ;that |