问题
Gun control is a subject _________ Americans have argued for a long time.
A:of which
B:with which
C:about which
D:into which
B:with which
C:about which
D:into which
正确答案是：
同类题型
35 –He eventually realized his own fault and wanted to reform –_______
The expo is being held inShanghai, _______a lot of advanced technology is shown for the first time.
There are many volunteers _________ are helping thechildren in Sichuan.
They ________that immediate action be taken to stop the water pollution .