David didn’t give up ______ he had failed in the experiment four times.
#58224
A
if
B
while
C
though
D
since
推荐题目
_______ Larry is tired, ________ he wants to relax.
#57066
A
Because, so
B
/,so
C
Why, beacuse
D
Because,why
Some people won’t realize the importance of their health ______ they have lost it.
#58394
A
after
B
when
C
until
D
as
The man refused to say sorry to me, ____ it was his mistakes.
#55565
A
because
B
when
C
after
D
even though