You should study harder______ it is too late to catch up.
#55841
A
if
B
when
C
after
D
before
推荐题目
David likes vegetables, _________ tomatoes, potatoes and cabbages. 
#56099
A
of course
B
for example
C
and so on
D
such as
-Why are you so busy?-____________I have ____________ work to do.
#55299
A
Because; too many
B
So; too much
C
So; too many
D
Because; too much