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---_______do you send e-mails to your pen friend?  ------Once a month.
#56239
A
How long
B
How far
C
How much
D
How often
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The book was written in _________ easy English _________ even primary school students could understand it.
#57546
A
so; that
B
such; that
C
too; to
D
very; that
He had to retire(退休)early         poor health.
#56910
A
as a result
B
because
C
so
D
because of
--- How long will it be ________ the Stock(股票) Market returns to normal? --- At least one year, I guess.
#56657
A
before
B
when
C
until
D
that
 —_____is your mother ? —A nurse. She works in a hospital.
#55487
A
Which
B
What
C
How
D
Where
He was _______ pain, __________ he didn’t cry.
#55874
A
in, but
B
with, and
C
at, or
D
in, and