如何具体区分do与be动词（am,is,are）再疑问句中的用法?疑问句的疑问词什么时候用do动词,be动词?例如

题目

如何具体区分do与be动词（am,is,are）再疑问句中的用法?疑问句的疑问词什么时候用do动词,be动词?例如
1.______Emily at her aunt’s last night?
A.Is B.Was C.Do D.Did
2.“Look at my watch!Isn’t is beautiful?” “Yes.Where ____ you ____ it?”
A.do; buy B.were; buy
C.did; buy D.are; buy
3._______ you with your family yesterday evening?
A.Did B.Was C.Were D.Do
结合这几道题具体分析,

答案