He lay in bed，listening to the rain the window．
| A．hitting | B．defeating | C．beating | D．striking |
_____, he suddenly found the shop he was looking for.
| A．When he turns round | B．To turn the left |
| C．Turned backward | D．Turning to the left |
I found John _____ the desk, _____ his homework carefully.
| A．seated at; to do | B．sitting at; doing |
| C．sat at; does | D．taking his seat at; to do |
We must set about _____ our lesson for the mid-term examination.
| A．reviewing | B．reviewed | C．to review | D．to reviewing |
I can't understand _____ at that poor child.
| A．you to laugh | B．you laughing | C．you laugh | D．why laugh |
–Can you spare me some time? –I'm afraid not. I have lots of letters _____.
| A．doing with | B．to do for | C．to deal | D．to deal with |