See the flags on top of the building? That was          we did this morning. 
#73903
A
when
B
which
C
where
D
what
推荐题目
_____ was expected, he failed in the exam.
#70662
A
That
B
As
C
Which
D
It
They are only children of not more than twelve and don’t realize_______to organize such an exhibition.
#72275
A
when they take
B
what it takes
C
how they take
D
what takes them