问题
nspot came into its active stage, ____ thathappens once every eleven years.
A:one
B:it
C:theone
D:what
B:it
C:theone
D:what
正确答案是：
同类题型
Mary didn’t know who _______ the problem she met with at that time.
(2013·四川省巴蜀名校一模)Everyone is different and that is ________ makes our world much better
Did you have breakfast this morning— No. I got up late and went school breakfast.
He never ____learning English .That was why he was successful at last.