I was about to inform you of the sudden change ______an unexpected visitor came.
#30562
A
because
B
before
C
when
D
unless
推荐题目
______your compositions carefully and some spelling mistakes can be avoided.
#30383
A
Having checked
B
Check
C
Checked
D
To check
I thought her nice and honest I met her.
#30781
A
first time
B
for the first time
C
the first time
D
by the first time
____ to America, her parents have not heard from her.
#79879
A
Because she went
B
After she went
C
When she went
D
Since she went
We began to work in the fields. ____, it started to rain, so we went home.
#80465
A
But
B
However
C
While
D
Yet
---Can I pass the exam this time，Mr.Li?---I don’t think you can________ you work hard.
#30779
A
unless
B
until
C
if
D
when