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 Ben was busy taking a training class.  ______we had to wait for himfor half an hour..
#57651
A
so
B
if
C
or
D
but
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We can easily become unhappy_____ we work out our problems in our daily life. 
#58265
A
after
B
if
C
until
D
unless
--Anna, what a nice dress you are wearing today!--Thank you. It fits me well, ______________ the colour is not my favourite.
#55190
A
and
B
so
C
but
D
or
—The passage is too hard to understand.—Yes, ________ it's very short and there are no new words in it.
#55256
A
so
B
as
C
because
D
though
________ he got up early, _______ he still missed the early bus.
#57394
A
Although, but
B
Because, so
C
Although, /
D
Because, /
— Could we practice playing the guitar in the hall, Sir ?                  —No , ___________ you have the principal’s (校长) note.        
#55372
A
if
B
unless
C
because
D
since
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