问题

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：

同类题型

Sorry, Doctor Smith isn’t here rightnow.—May I ____ a message on his desk

It _______ be Mr．Johnson who is in the office．— No, it _______ be him．I saw him off at the airport half an hour ago．

man has his faults We should, therefore, learnto be ______ of others

ou keep an eye on my bag, please I want to use the bathroom．－It’ll be safe with me．

According to our teacher, we should take detailed notes in class because they are more __________ than our memory.