问题
选择题
—What do you think Mr.Green is like?
—Haven’t you seen through him?I have warned you again and again that men of this kind______
A．is in danger
B．are in danger
C．is dangerous
D．are dangerous
答案
答案：D
根据句意应该表达“这种人很危险”，所以使用dangerous而不是 in danger （处在危险当中），再因men of this kind 谓语动词应和men保持一致，所以答案D。