If hes just being rude, honestly just stay in your room or something until he leaves, or maybe even tell your brother about it so maybe he'll say something to the friend. if he keeps bothering you even after all that, just tell him to leave you the FU€K alone. best of luck!!
        
             
        
        
        
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.
        
             
        
        
        
Your answer would be “ b “ !
        
                    
             
        
        
        
The time has come for me to make my journey into the desert. I am only eighteen. But, all children my age am required to make the journey to be accepted as adult members of the community. The village chief told me that it was very important to take plenty of water and materials to build a tent. 
 The mission seems long and hard. I taste the fresh water from my canteen and the sun feel too hot to bear. I travel many days and many nights.
 After seven days, I return home with relief. As I arrive back at my village, the villagers appear so proud of me.
Hope this helps you:))
 
        
             
        
        
        
It’s (D) because it’s the only one that makes sense when you read it out loud