问题
People thought _____ hard to live without the medicine.
A:it is
B:this
C:it
D:this is;
B:this
C:it
D:this is;
正确答案是：
同类题型
What are you worrying about? —It is ________ there is any chance of being infected by AH1N1 virus
Is it the fact ____ he hasn’t turned in his research report?
How long may I keep the book —You ________ keep it for two weeks.
The English exam is not difficult, is it—______. Even Tom ______ to the topstudents failed in it.