---Mum, I'm old enough to wash________ clothes by myself.
---All right. You can just wash________.
| A．my, your | B．mine, yours |
| C．my, yours | D．your, my |
Eric is so careful that he always looks over his exercises to ________ there are no mistakes.
| A．make sure | B．find out | C．think of | D．look for |
Excuse me ,sir. You ______ open the door before the train stops.
| A．mustn’t | B．needn’t | C．may not | D．don’t have to |
The movie wasn’t ______.He fell asleep half way through it.
| A．interesting enough | B．enough interesting |
| C．interested enough | D．enough interested |
－Dad , why must I stop ______ computer games?
－ For your health, my boy.
| A．play | B．to play | C．to playing | D．playing |
It is a wise _______for you to wear the white tie. It matches your shirt well.
| A．choice | B．support | C．mixture | D．honour |