-         hard Tony is working!--Yes. We should learn from him.
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A
What
B
How
C
What a
D
How a
推荐题目
His father and mother ____ teachers.
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A
are all
B
are both
C
both are
D
all are
—________ is this blue shirt?—It’s seven dollars.
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A
How many
B
How much
C
How old
D
How tall
________ the alien was in the museum, I called the TV station. 
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A
Because
B
Then
C
As soon as
D
While