问题

______ a phone is of great help, I don’t think it’s agood idea to spend too much time on it.

A:down
B:While
C:Because
D:As

正确答案是：

同类题型

How ____ can I ____ the books—Three weeks.

we don’t know what was discussed,yet we can feel the topic_____.

They will ______Qingdao tonight.

This is my book. _____ is over near the window.

Does the newly published detective booksell well—No．it will only a limited public．