问题

___________you try to do something beyond what you have already mastered, you will never grow
A:Since
B:When
C:Though
D:Unless
B:When
C:Though
D:Unless
正确答案是:
同类题型
_____ his overdrinking, the accident would not have happened.
. He was determined not to be the first_____________it.
The main street is lined with small stands and shops _____ sell almost anything you can imagine.
______ English is more and more important for our future, we should spend more time on it
s warn that medical waste from hospitals, if properly, may contribute to spreading diseases.