Question

——_________ should your robot need_________ batteries?
——Every two months.

A．How soon, to be changed	B．How long, to change
C．How much, change	D．How often, to change

Answer 1

D

考查特殊疑问句的回答。根据答语 Every two months可排除A 和B ,且句中的need是实义动词need to do sth.故选D。