___the internet is of great help ,I don’t think it’s a good idea to spend too much time on it. ( )
A.If
B.While
C.Because
D.As
正确答案是B
___the internet is of great help ,I don’t think it’s a good idea to spend too much time on it. ( )
A.If
B.While
C.Because
D.As
正确答案是B