You have failed two tests.You’d better start working harder,_______ you won’t pass the course.
#79810
A
and
B
so
C
but
D
or
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(2013·甘肃兰州名校高三检测)The professor told me to start the research right now, ________ I was sure to fall behind.
#30546
A
or
B
so
C
but
D
and
People in Shaanxi are proud of they have achieved in the past ten years.
#31071
A
what
B
which
C
that
D
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I’ll finish the job ____ I come across great difficulty.
#33941
A
so that
B
even though
C
no matter
D
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(2013·宁夏银川一中高三第四次考试)________ scores of times, but he still couldn't understand it.
#30539
A
Having explained
B
Having been explained
C
Though it was explained
D
It was explained