问题
I think this is ______ useful book.
A:a
B:an
C:the
D:/;
B:an
C:the
D:/;
正确答案是：
同类题型
You should be more confident in______ situationis challenging you.
_______ he was , he decided not totrouble her.
Where_______ your friend _______– Yangzhou.
It was in the room _________ he was born _________ the meeting was held.
Do you know who the young man is beside the door? — A man _____ himself Jason. [ ]