英语好的朋友请帮我看一下下面的几道英语题
下面几道题,我都不太明白,帮我选出答案,然后讲讲为什么?
1、These kinds of clothes ___well,so the store has decided to lower their prices .这个应该用被动语态吗?为什么?
a:don't sell b:are not sold
2、It was not until midnight that I ____to sleep last night.
a:had gone b:was going c;went d:would go
选择那个
3、Twelve inches ____one foot.应该用单数还是用复数?
a：make b：makes c:is making d:will make