David didn’t give up ______ he had failed in the experiment four times．
#57729
A
if
B
while
C
though
D
since
推荐题目
He will go to the movies staying at home this Sunday
#57081
A
rather than
B
instead of
C
prefer to
D
instead
The old man is _______ please keep quiet.
#57362
A
sleep, and
B
asleep, so
C
sleepy, but
D
sleeping, but
Lin Shuhao is ______famous ______ all the basketball fans in China know him.
#57641
A
too, to
B
enough, to
C
so, that
D
as, as