问题
Our neighbor offered to look after our baby yesterday when we were busy, _____is often the case.
A:it
B:that
C:which
D:as
B:that
C:which
D:as
正确答案是：
同类题型
Now it is 7 o’clock in morning in Beijing and 11 o’clock at night in London.
I’m looking forward ________ a trip to Mount Tai.[ ]
I found many people ________ on the benches at the endof the day，chatting
He promised to do what he ______ sure of _______.
I will stay in the hotelthere is some news about the missing girl