He failed in the exam, and I wonder ___ he studied hard in the school.
#80339
A
when
B
that
C
if
D
where
推荐题目
We are having a class get-together. It’s been twenty years we graduated from high school.
#33241
A
before
B
since
C
after
D
when
As a matter of fact, ________ matters most in learning English is enough practice.
#30329
A
where
B
why
C
which
D
what
Lisa enjoyed so much ____ she was on holiday in Japan last year.
#31545
A
that
B
when
C
for
D
though
－Sir，may I borrow some new books?－Sorry，you can't________you haven't turn back those you borrowed one month ago.
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A
unless
B
before
C
because
D
until
Experts are trying to work out a plan to deal with the problems caused by global warming _________ it is too late.
#32265
A
if
B
before
C
when
D
until