_________the students came from different countries, they got along quite well in the summer camp.
A. While B. Unless
C. Since D. Until
I believe you will have a wonderful time here you get to know everyone else.
A. though B. as if
C. once D. so that
We need to get to the root of the problem______ we can solve it.
A. while B. after
C. before D. as
If you miss this chance, it may be years ____ you get another one.
A. as B. before
C. since D. after
_____the damage is done, it will take many years for the farmland to recover.
A. Until B. Unless
C. Once D. Although
He is a shy man,___he is not afraid of anything or anyone.
A. so B. but
C. or D. as
