问题
More than 200 million people in China suffer high blood pressure, and 70% of them are unaware of the fact ______they have the illness.[ ]
A: what
B: when
C: how
D: that
B: when
C: how
D: that
正确答案是：
同类题型
are lots of problems in your hometown, but we’rehappy to see many ofthem________
With the guide _____ the way, we finally got to thevillage which we were looking for.
People are encouraged to speak openly, but careless words are ____ to hurt others’ feelings.
In the dark forests ______, some large enough to hold several English towns. [ ]