6.next to 或 close to
7.D
具体某天的早中晚,介词用on
8.B
have sth to do 有某事要做
9.D
10.How much 多少钱
11.enemies/enemy 均可
12.being
deny doing sth 否则做过某事
13.impossible 不可能的
14.admitted pringting,herself
15.no signs/marks/prints
16.In addition to,no loss
17.knocked at/on,no answer/reply
注：/ 表示可以任意选用其一.