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—______ do you spell “classroom”?—I’m sorry I don’t know.
#60156
A
What
B
When
C
How
D
Where
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— __________ have you been to Taiwan?— Only once.
#60020
A
How often
B
How many times
C
How long
D
How soon
________ under the tree? No，they aren’t．
#60267
A
Where are
B
What is
C
Are the balls
D
Is the ball
--- You may refuse my invitation , but you must explain why .  --- Oh, I must , _____ ?
#65028
A
did I
B
didn’t I
C
must I
D
mustn’t I
—        is that girl?—Oh , she is my friend , Maria.
#60239
A
Where
B
Who
C
How
D
What
Look！The ground is wet.It must have rained last night，________？
#64477
A
hasn’t it
B
didn’t it
C
mustn’t it
D
hadn’t it