you must be friendly to the animals in the zoo.改为祈使句视

改错When you greet with others,you must be friendly. 1 You must friendly to others.2 You must be friendly to others 【概念混淆了,请问哪句是对的?】Why? You must be friendly to the animals in the zoo.改为祈使句. you must be friendly to the animals in the zoo.改为祈使句视 You must be a very honest person for her to be so friendly to you.为什么用to be而不用being?不是表示状态吗 You must be strong . you must be You must be hungry You must be joking You must be confident. You must be dreaming you must be careful you must be ___!(kid) You must be carful next You must be happy oh., you must be joking,救命 You Must Be Strong 歌词 You must certainly be happy