The committee __ over the problem among themselves for two hours. 
#100019
A
has argued
B
has been arguing
C
have argued
D
have been arguing
推荐题目
A new cinema _________ here now. They hope to finish it next month.
#99783
A
will be built
B
is built
C
has been built
D
is being built
If we _________ now to protect the environment, we’ll live to regret it. 
#100580
A
hadn’t acted
B
haven’t acted
C
don’t act
D
won’t act
How long have you ______ ?
#100776
A
lost your job
B
been out of work
C
been lost your job
D
out of work