___ you know the rules of swimming, you will be able to swim well.
#80368
A
Before
B
While
C
Though
D
Once
推荐题目
______ is amazing to us is ______some plants can sense the soft touches of the insects on the leaves.
#32750
A
That; that
B
What; what
C
What; that
D
That; what
There is still much to discuss；________，we shall return to this topic at the next meeting.
#30470
A
yet
B
therefore
C
otherwise
D
however
－Did Tom go back late last night?—No. It was just nine o’clock he arrived home.
#32970
A
when
B
after
C
until
D
that
____ you have a chance , you might as well make full use of it.
#31874
A
Now that
B
After
C
Although
D
Even if
_________ we have realized the danger of over-consumption, some measures should be adopted as soon as possible.
#31328
A
Now that
B
As long as
C
In order that
D
Even if