加have的区别，为什么？

We ____many piaces in our country.Why don't we plan___any other countries?
A<traveled,to travel>
B<have traveled,to travel>
选哪个。。为什么？

加have的区别，为什么？ 这里为什么加have Have gone与Have been的区别 have been与have gone的区别 have been和have gone的区别 have no与have not 的区别 have gone和 have gone 的区别？ have 与have got 的区别 have 与have to的区别 I should have keep my room clean.为什么加have??