parents must take good care of their chilkdren,_____they?

题目

parents must take good care of their chilkdren,_____they?
A mustn't B don't
C need't D aren't 为什么选择A
why do you ask me to find this tom again?I have told you that there is no____in my company
为什么填such person 不填such a person

答案

1.这是反意疑问句,前面是肯定,后面就是否定;前面是否定,后面就是肯定.这是固定的,must的否定自然就是mustn't了.
2.no such person 是固定词组.