初高衔接英语单选两题The flowers were so lovely that they in no time(很快

初高衔接英语单选两题
The flowers were so lovely that they in no time(很快）.
A.sold B.had been sold C.were sold D. would sell
His house is a stone's throw the school.
A.with;for B.within;of C.for;from D.within;to
需要解释
1.c,但是sell、sound，feel等词都是主动表被动的吗?如the flower sells well 为什么这里用were sold,请解释