The number of foreign students attending Chinese universities ________ rising steadily since1990. 
#104967
A
is
B
are
C
has been
D
have been
推荐题目
Hi, Bill. I _____ you _____ in this city. How long have been here?
#103680
A
didn’t know; were
B
don’t kow; are
C
haven’t known; are
D
don’t know; were
The film _______ for twenty minutes when they got to the cinema. 
#103330
A
had already been on
B
has already been on
C
had already begun
D
has already begun