___________you try to do something beyond what you have already mastered, you will never grow.
#30739
A
Since
B
When
C
Though
D
Unless
推荐题目
-- Will you lend your MP4 player to Jack?-- Yes, ________ he promises to return it on time.
#34116
A
as soon as
B
as well as
C
as long as
D
as far as
Viewers continue to watch TV ______ they complain about the quality of the programming.
#33448
A
even though
B
as if
C
as long as
D
unless
--Haven't you seen Mr. Wilson at the lecture? --Yes, but he had left _________ I could ask him any questions.
#31720
A
when
B
before
C
after
D
as