— The floor is dirty.— Yes. It _______ for two days.
#99920
A
hasn’t swept
B
didn’t sweep
C
hasn’t cleaned
D
hasn’t been cleaned
推荐题目
Although all of the apples _____, none of them _____ good.
#102362
A
have tasted; are tasted
B
have been tasted; are tasted
C
have tasted; taste
D
have been tasted; taste
Mr. Black told us that he ______ born on the April fools. 
#100176
A
has been
B
had been
C
was
D
were