________you’ve experienced it，you can’t understand how I felt.
#30226
A
Once
B
Because
C
Unless
D
While
推荐题目
It was several minutes ____we realized what was happening-our dog was trapped in a newly-dug tunnel.
#30154
A
since
B
before
C
until
D
while
The villa gers have already known __________ we’ll do is to rebuild the bridge.
#31929
A
this
B
that
C
what
D
which
—Hello, can I speak to Mr. Smith?—I’m sorry, but it is 3 weeks _____ he worked here.
#31785
A
before
B
since
C
after
D
while
It’s widely accepted that life is ___ there’s sunshine and water.
#30146
A
there
B
where
C
in the place
D
in which