问题

It is not necessary for you to be ___________ about other’s business [ ]

A: concern
B: concern yourself
C: concerning
D: concerned

正确答案是：

同类题型

The old man _______ up late,but now he _________ up early.

下列各句中，表达得体的一句是

－Is that your bike－_______.It is _______my bike. It’s hers.

What is Grandma cooking in the kitchen — Fish, I guess. How nice it_______!

Excuse me, but could you tell me _______