1.My sister is ill.I must take care of her at home.
My sister is ill.I must ___look_____ __after_____ her at home.
2.We always see a film on Saturday evenings.
We always ___go___ __to___ __the___ __cinema___ on Saturday evenings.
3.It's hard to get good grades.
It's __not_____ ___easy_____ to get good grades.
4.Eating a balanced diet is good for health.
___It's_____ ____good__ for health _to_____ ___eat_____ a balanced diet.
5.You should come here early.
You __mustn't___ __come______ here late