________ the job takes a significant amount of time, most students agree that the experience is worth it.
A. If only B. After
C.Although D.In case
______ scientists have learned a lot about the universe, there is much we still don't know.
A. Once B. Since
C. Though D. Unless
_____ he once felt like giving up, he now has the determination to push further and keep on going.
A. Where B. As
C. In case D. Now that
________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
There is only one more day to go your favorite music group play live.
A. since B. until
C. when D. before