— Your aunt often walks the dog in the morning.
— Yeah, ___________ bad weather stops her.
A. when B. unless
C because D. since
．Who is knocking at the door?
——It ______ Mr. Black, because he_______Washington.
| A．can't be;has gone to | B．may be;has been to |
| C．must’t be;has gone to | D．may be;went |
It’s raining heavily .But ___ of the farmers are picking up
the apples ___ the trees.
| A．every, in | B．none , in |
| C．none, on | D．some,in |
I often see her _the room. I saw her _the room again just now.
| A．clean;clean | B．clean;cleaning |
| C．cleaning;clean | D．cleaning; cleaning |
He has __________ for an hour .
| A．got up | B．up |
| C．been got up | D．been up |
It’s careless ____ him to make _____ mistakes.
A of, so many B of, too much
C. for, too many D. for. so much