---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
Tom didn’t understand the text ________ the teacher explained it to him.
#58317
A
when
B
while
C
until
D
since
---Would you like to go to the amusement park?--- If Jim does, _____.
#55288
A
I go, too
B
so will I
C
neither will I
D
so do I
