---You did not wait for Mr.Black last night,did you?---Yes,but we __ .he did not return home at allA.must not B.need not C.would not D.should not have
问题描述：
---You did not wait for Mr.Black last night,did you?---Yes,but we __ .he did not return home at allA.must not B.need not C.would not D.should not have
答
D.shouldn`t have本来不该等待，因为他根本没有回家，可是我们却等了。
答
D
问句的意思是,你们昨晚没有等Black回来,对吗?-我们等了,但是我们______.（因为）他昨晚根本没有回家
所以填should not have 意即 本不应该等的