---What ______ the noise, Bill?---Sorry, I broke my glass.
#39172
A
is
B
was
C
has been
D
will be
推荐题目
There are many people downstairs. What do you think _____? 
#40285
A
to happen
B
is happening
C
is happened
D
happened
A long time __________ since he ________ Shanghai.
#39806
A
have passed, left
B
has passed, left
C
have past, has left
D
has past, left