_____ is known to all, the age _______ children can go to school is seven.
#70754
A
What; which
B
It; when
C
As; at which
D
Which; when
推荐题目
“You can’t judge a book by its cover,” ________ . 
#67755
A
as the saying goes old
B
goes as the old saying
C
as the old saying goes
D
goes as old the saying
The reason ______he didn't come was ______he was ill. 
#73772
A
why; that
B
that;why
C
for that;that
D
for which;what