问题

Gun control is a subject ________Americans have argued for a long time,

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

正确答案是：

同类题型

Bobfailed in the exam again ——He _____ it ; he never worked hard

Do you think that housingprice will keep _____ in the years to come? —Sorry, I have no idea. [ ]

A series of stimulus policies and supportive measures taken by the government ________ to promote change in the economic environment in this area

It was_______ back home after the experiment.

Time is of no importance to great thoughts, ________ are as fresh today as when they first passed through their authors’ minds, ages ago.