-Have you known Dr Jackson for a long time?-Yes,since she         the Chinese Society.
#102003
A
has joined
B
joins
C
had joined
D
joined
推荐题目
. The Roman Empire _____ for several centuries.
#103601
A
exists
B
existed
C
was existed
D
is existing
Ladies and gentlemen,please fasten your seat belts,the plane______.
#101863
A
takes off
B
is taking off
C
is going to take off
D
is to take off
Had you listened to the doctor, you _______ all right now.
#101374
A
are
B
would be
C
were
D
would have been