---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
Mary _____ go to bed ______ her mother came back last night.
#56886
A
not, until
B
doesn’t , until
C
aren’t, until
D
didn’t, until
______I know him, ______I hardly talk to him.
#58081
A
Although; but
B
Although; /
C
/; Although
D
But; although
I like riding fast .it’s very exciting .Oh , You mustn’t do it like that , it may have an accident .
#57129
A
and
B
or
C
so
D
but
