should,ought to的用法,填空

should,ought to的用法,填空
用should填空：
1.We ___(drink) about eight cups of water a day.
2.John ___(take) a rest after hours of hard work.
用ought to填空：
1.We ___(keep) our home clean and tidy.
2.You ___(not/tell)lies to your parents.
我想要空中的答案,而且我想知道,首词We等这些复数词语后的should,oought to后括号里的词是不是也要变呢?
You这些就不用should,ought to后的词就不用变吗?

1,should drink
2,should take
1,ought to keep
2,ought not to tell
你这样记住,这两个都是情态动词,情态动词后面直接+动词原形,并且和主语没有关系,不管是we,I,you,he,she,he或者they,it都一样的
就是如果把这里所有的主语换成he,结果还是一样
也就是你讲的,不用变化的
肯定对哦