1) i am jealous of/ in my best frend. 2) she is a straight a student and good at/ in sports 3) she is popular by/ with all our classmates and teachers

1) I am jealous  (завидую)  of my best frend.

2) She is a straight A student and good at sports

3) She is popular  with all our classmates and teachers

1) I am jealous of my best frend. 

2) She is a straight A student and good  in sports 

3) She is popular with all our classmates and teachers