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.
Some synonyms of wrinkled include:
creased
lined
shriveled
crinkled
grooved
wizened
furrowed
corrugated
Answer:
Yes Me
Explanation:
I would like to help what is the beef (problem )
