Some of the students are nearsighted______they spend too much time watching TV or playing online games. 
#55869
A
when
B
though
C
because
D
unless
推荐题目
Don’t talk _____ drink in class.
#55261
A
and
B
but
C
or
D
so
There is going to ________a sports meeting next week. If it ________, we’ll have to cancel it.
#55308
A
be; will rain
B
have; will rain
C
be; rains
D
have; rains
We can’t go to the mountain ________ the bad weather.
#56168
A
because
B
because of
C
although
D
because that