when to start and where to go camping hasn't/haven't been decided 是用hasn't 还是haven't?

问题描述:

when to start and where to go camping hasn't/haven't been decided 是用hasn't 还是haven't?

havent

hasn't 虽然用and连接,但是两者是逻辑或者递进关系

hasn't

haven't

when to start and where to go camping haven't been decided 【用复数】
when and where to go camping hasn't been decided【用单数】
有不会的可以再问我