问题
It is uncertain____side effect the medicine will bring about,although about two thousand patients have taken it. [ ]
A: that
B: what
C: how
D: whether
B: what
C: how
D: whether
正确答案是：
同类题型
．I’dlike to settle down somewhere ______the climate is mild and the sun shines allyear long．
This hotel________$ 140 for a single room with bath.
Tim was tired and he didn’t want to say ______ about the matter.
The TV set he _______ works well now.[ ]
We have an English speech contest ________August 5th every year.