问题

Gun control is a subject________Americanshave argued for a long time.

A:of which
B:with which
C:about which
D:into which

正确答案是：

同类题型

Are you afraid of _____ alone

Many experts agree that once these treasures are _______ to the air, great harm will be done to them. So they think it better not to unearth the treasures.

What kind of first aid should you perform in this situation ____ your nose is bleeding ?

Most disaster experts believe there is the potential ______ things could get a lot worse

33Actually, _____ works hard can be _____ he wants to be, whether it is a pilot, an engineer or a manager