continuously, in a row

I study continuously.

私は続けて勉強します

I study continuously every night.

私は毎晩、続けて勉強します

I study continuously at the library every night.

私は毎晩、図書館で続けて勉強します

I study continuously at the library with my friend every night.

私は毎晩、図書館で友達と続けて勉強します

I study continuously at the library with my friend every night for the exam.

私は毎晩、図書館で友達と試験のために続けて勉強します