Remember to think actively as you listen in class, ____ you may fall asleep.
#31538
A
but
B
and
C
or
D
so
推荐题目
A small car is big enough for a family of three ____ you need more space for baggage.
#79792
A
once
B
because
C
if
D
unless
Parents should pay attention to areas _______ their child is having difficulty and spend extra time to help him or her master those skills.
#33565
A
as
B
where
C
why
D
when
________ you are responsible for the information, you must be very careful.
#31810
A
Unless
B
While
C
Since
D
Though