用所给代词的适当形式填空。

1. _____ is Chinese. (his)

2. This is Mark. _____book is here. (he)

3. That's Lisa. _____ pencil is old. (she)

4. _____ is my English teacher. (her)

5. Is that _____ backpack, Jones? (you)

上海某旅游团前往某市旅游，在当地一家少数民族风情园中，几位游客被所谓的“少数民族姑娘”强行戴上了荷包绣球，举行拜堂成亲的游戏，最后不仅要付出吉利的49元钱，而且还要付给“新娘”小费50元。导游有失职的地方吗？他应该怎么做？