----Have you known Professor Jackson in our department for a long time ? ----Yes, since he _____ the our university.
#4607
A
has come
B
comes
C
had come
D
came
推荐题目
.We will learn how to operate the machine _______.
#4731
A
at a time
B
at one time
C
at the time
D
in time
-- I think he is selfish.  -- _______, he is very noble and generous.
#4522
A
In other words
B
You are right.
C
Don’t mention it.
D
On the contrary