—How clean the room is!   —Yes,I am sure that someone _______ it.
#36374
A
cleans
B
cleaned
C
has cleaned
D
had cleaned
推荐题目
Many accidents _________ by careless drivers last year .
#39725
A
are caused
B
were caused
C
have caused
D
will cause
 _______a sports meeting on the  playground next week  .
#40263
A
There will be
B
There will have
C
There will
D
There have