Work hard when young, ______ you will regret.
#31075
A
and
B
so
C
but
D
or
推荐题目
____ he was not rich enough to buy whatever he wanted, Edison decided to make his new laboratory the best.
#32633
A
Although
B
Since
C
When
D
As
(2013·安徽名校联考Ⅱ)________ nearly all behavior is learned behavior is a basic assumption ________ has been put forward by social scientists.
#30530
A
What; that
B
That; what
C
What; what
D
That; that
______your compositions carefully and some spelling mistakes can be avoided.
#30383
A
Having checked
B
Check
C
Checked
D
To check
He made a mistake, but finally he solved the problem __________ it got worse.
#30987
A
until
B
before
C
when
D
as