问题
______ I admit that there are quite a few problems, I don’t agree that they cannot be solved.
A:Supposing
B:Since
C:While
D:As;
B:Since
C:While
D:As;
正确答案是：
同类题型
The question that puzzled them is ____ they can getrid of the air pollution in the area.
_________are my parents. _________ work in an office
port your decision, but I shouldalso make it clear that I am not going to be _____ to it
He looked around nervously to ________ that there was nobody following him. [ ]