—Have you known Dr. Jackson for a long time?—Yes,since she ________ the Chinese  Society.  
#99164
A
has joined
B
joins
C
had joined
D
joined
推荐题目
I know Mr. Shuili; we ______ to each other at an English lecture.
#102636
A
are introduced
B
are been introduced
C
were introduced
D
had been introduced
What do you suppose _____ him think so?
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A
to make
B
making
C
to have made
D
made
 According to a report, cigarette smoking ______ in all indoor public places in our province soon.
#99848
A
will ban
B
have banned
C
will be banned
D
have been banned