How much ______ a packet of sweets?
A.is B.are C.has
( ) I'm hungry. Please bring me some ______.
| A．kites | B．desks | C．boxes | D．cakes |
( )The Whites _____ many places of interest since they came to China.
| A．have visited | B．will visit | C．visited | D．visit |
( )The doctor often tells him ____ more exercise.
| A．to take | B．taking | C．taken | D．take |
( )- Can you sing the song in English?
-- No, I ____.
| A．may not | B．mustn't | C．needn't | D．can't |
( )Bruce, look at your dirty shoes. You'd better _____ them right now.
| A．washed | B．washing | C．wash | D．to wash |