Peter must be ill.It's the only thing that can ________ his strange behavior.
| A．lie in | B．result from |
| C．account for | D．explain about |
---Do you mind if I open the window?
---I feel a bit cold.
| A．Of course not. | B．You'd better not. |
| C．Go ahead. | D．Why not? |
While the dog, you should take care not to Otherwise, it may be dangerous to strangers.
| A．walking; get it loose |
| B．walk; be loose |
| C．walking for; get it loose |
| D．train; get it run |
From the _____ look on his face, we know he is _____.
| A．frightening; frightened | B．frightened; frightened |
| C．frightening; frightening | D．frightened; frightening; |
He asked the boy where.
| A．was his mother | B．is his mother |
| C．his mother was | D．his mother is |
How are you going to such problem ?
| A．deal with | B．do with |
| C．deal | D．do up |