Our classroom is very clean. Do you know who＿＿＿cleaned it?
#16940
A
was it that
B
it was that
C
was it who
D
he was
推荐题目
Mr. and Mrs. Scott prefer a trip in a small town to in so large a city as New York．
#15673
A
this
B
one
C
it
D
that
The doctor advised Vera strongly that she should take a holiday, but didn't help.
#15372
A
it
B
she
C
which
D
he
Children find_____difficult to sit for hours with little to do while flying.
#16221
A
which
B
this
C
that
D
it