Study hard,_______ you will not pass the exam.
#58185
A
and
B
or
C
but
D
so
推荐题目
This problem is ______ difficult __________.
#57835
A
so; that few of us can do
B
so; that few of us can do it
C
too; for anyone of us to do
D
too; for anyone of us to do it
The old man is _______ please keep quiet. 
#57362
A
sleep, and
B
asleep, so
C
sleepy, but
D
sleeping, but