Your floor is dirty. It needs _______. 
#75408
A
clean
B
to clean
C
cleaning
D
cleaned
推荐题目
She is the first person in her family to __________ this kind of social activities. 
#74518
A
come near to
B
go on with
C
keep up with
D
take part in
. We all demanded the new type of machine ____________   put into use as soon as possible.
#76308
A
refer to
B
referred to be
C
refer to be
D
referring be
--Would you mind if I used your mobile phone?-- _______, please. 
#64329
A
Yes
B
Go ahead
C
Of course
D
All right