---How long have you known the doctor ? ---_________he helped me three years ago.
#56019
A
When
B
Before
C
Because
D
Since
推荐题目
—Could you tell me _______, Mary? —Of course. Go straight, and you’ll see it on your right.
#55393
A
where is the cinema
B
where the cinema is
C
where was the cinema
D
where the cinema was
—Shall we go to the Great Wall on National Day?—It’s a great idea ，__________we don’t have enough money．
#58196
A
and
B
but
C
or
D
then
--- Hurry up! The bus is coming.--- Wait a minute. Don’t cross the street the traffic lights are green.
#55220
A
after
B
until
C
while
D
since
Many people believe we will face environmental disasters _________ we completely change the way we live.
#57124
A
but
B
though
C
unless
D
until