—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
There ______ an English party tomorrow evening.
#41564
A
will be
B
has
C
will have
D
will has
So far, most of the work _______ by others, it’s your turn to do the rest of it. 
#39421
A
has finished
B
finished
C
has been finished
D
is finished
Our teacher told us that light _____ much faster than sound.
#41507
A
traveled
B
travels
C
is traveling
D
was traveling
You won’t have the chance to succeed when you ________.
#42061
A
gave up
B
give up
C
will give up
D
are giving up