________ some people are motivated by a need for success, others are motivated by a fear of failure.
A.Because B.If
C.Unless D.While
The companies are working together to create ________ they hope will be the best means of transport in the 21stcentury.
A.which B.that C.what D.who
You won’t find paper cutting difficult _____you keep practicing it.
A.even if B.as long as C.as if D.ever since
If you want to lead a happy life, you’d better learn to accept life ______ it is.
A.as B.that
C.which D.where
English is a language shared by several diverse cultures, each of ________ uses it somewhat differently.
A.which B.what C.them D.those
—Have you got the results of the final exam?
—Not yet. I'm afraid it will be a few days we know the final results.
A.before B.after C.until D.when
