Tom, clean up the broken glass _________ someone walks on it.
#31009
A
since
B
when
C
before
D
as
推荐题目
---How long has your brother been working here?---_______ he graduated from college in 2007.
#31738
A
When
B
Until
C
Long before
D
Ever since
An completely new district of industry has appeared in ________ used to be wasteland.
#30108
A
which
B
that
C
what
D
where
You have to wear a helmet and a life jacket for protection, just ____ you fall into the water.
#32160
A
for
B
because
C
so that
D
in case
It just isn’t fair that____I was working as a waiter last month, my friends were lying on the beach.
#30766
A
while
B
whenever
C
though
D
for