问题

_______ many of us today take the television for granted, it’s actually one of the greatest invention of the 20th century.

A:If
B:Unless
C:While
D:Since

正确答案是：

同类题型

___ he was ill, I was expected to take his place greatly surprised me for I didn’t have much working experience.

There are two _______on the table.

Good parents should be _______ with their children.

a pause for a drink, I took up my story just_______ I had left off

Do you like the match?—Yes, it ___ very soft.