－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
— Have you been here before?— Yes. This is the third time that I ______ to Shanghai.
#100742
A
come
B
came
C
have come
D
had come
I thought it ＿＿ very boring, but it wasn’t.
#103593
A
is going to be
B
was going to be
C
used to being
D
can be
As a leading producer of greenhouse gases, China the United States as the largest consumers of energy．
#99345
A
describes
B
joins
C
controls
D
influences
-----Are you still very busy?-----Yes, I ______ the report for the manager and it won’t take long.
#100851
A
have just finished
B
am just finishing
C
had just finished
D
am just going to finish
Though Professor Liu ____ in New York for seven years, he has never regretted moving back to Shanghai, his hometown.
#102851
A
lived
B
has lived
C
had lived
D
was living