—You seem to have known Dr. Ken for a long time.—That’s true. ________ he joined our club years ago.
#34031
A
Since
B
Until
C
When
D
If
推荐题目
What some Chinese parents understand is that nothing is fun _______ their children are fond of it.
#32331
A
after
B
when
C
if
D
unless
a bad habit is formed, it will take a long time to get rid of it.
#32445
A
Ever since
B
While
C
Once
D
Even if
