With an online course Lynn has over 300, 000 students all over China ____ her class through the Internet.         
#100747
A
attending
B
attended
C
attend
D
are attending
推荐题目
Do you know the thief_______by the police.
#101352
A
has been catching
B
has caught
C
has been caught
D
will caught
Where were you at lunch time? I   a seat for you in the dining hall.
#104548
A
saved.
B
was saving .
C
have saved.
D
had saved.