Here, you would need to add the preposition "in."
The sentence should read: My elder sister is really interested in the problems of the environment.
Other prepositions would not make sense and could confuse the reader as to the intended meaning.
Answer:
I think That charlie is justified for stealing food because he needed it but it still
isnt something we should do every day
Explanation:
Answer:
my friend joanna is worried that thief's may target her house, while on holiday. however, we are going to keep an eye out on her house for her while she's on vacation
The Smith family is a very active family. Everybody in the family is involved in a sport.
1) should arrive
2)don’t have to show your
3)shouldn’t worry
4)ought to say goodbye before
5)should not criticise
6)will pay if
7)has a difficulty with making