Why do you look so sad?My job is--English,but I find it ,har

Why do you look so sad?My job is__English,but I find it ,hard to make my students__in it.(选项见
A.to teach,interested B.teaching ,interesting
C.to teach,interesting D.teaching,interest
答案：选择A,因为我的工作是教英语,可以用动词不定式或动名词形式来表示具体的工作.关键后面的选项中,interested用来修饰人,interesting用来修饰物,让学生感兴趣,所以前后综合后答案为A.