当你看到黄灯亮时，你可以对同学说：
A.Red is stop.
B.Yellow is wait.
C.Yellow is go.
( ) Most of the children enjoy ______ computer games.
| A．play | B．playing | C．played | D．to play |
( ) 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 |