At school, some students are active____ some are shy, yet they can be good friends with one another.
#31406
A
although
B
while
C
so
D
as
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Qian Xuesen tried many times _________ he found the solution to the puzzle about space technology.
#31596
A
after
B
before
C
since
D
when
We wouldn’t go abroad for our vacation _______ we could afford it.
#32210
A
as if
B
so that
C
in case
D
even though
I recorded the professor’s speech on my cellphone _____ I could listen to it several times later.
#33276
A
in case
B
now that
C
even though
D
so that
________ a two-year period, Nancy became addicted to painkillers （止疼药）.
#34784
A
Beyond
B
Above
C
Since
D
Over
What the doctors really doubt is my lather will reeover from me serious disease soon.
#30620
A
whether
B
when
C
why
D
how