问题

You never know _______ you try something.
A:though
B:until
C:if
D:because;
B:until
C:if
D:because;
正确答案是:
同类题型
I went along thinking of nothing________,only looking at things around me[ ]
What’s the matter–I can’t stand the loud music here. It’s nearly ________ me mad.
My brother hurt his legs when he rode his bike on the way back home.— ______.
unds very much inthe job, but I’m not sure whether he can manage it.