--      are the Olympic Games held? --Every four years.
#60254
A
How often
B
How soon
C
How long
D
When
推荐题目
---- ___ ___ does she ______ sitcoms?      --- She likes them.
#60279
A
What…think of
B
How…think of
C
What…like
D
What…thought of
Will you please     computer games now? 
#60270
A
not play
B
not to play
C
don’t play
D
not playing
You must work hard from now on,      ?
#65248
A
can you
B
won’t you
C
mustn’t you
D
needn’t you