“She wrote the papers for all of her classes last month.”
past simple
“She writes a lot of papers for her classes.”
present simple
“She will have written many papers for her classes by the end of the semester.”
future perfect
“She will be writing a lot of papers for her classes next year.”
future continuous
“She has been writing a paper all night, and now she needs to get some sleep.”
present perfect continuous
“She will have been writing this paper for three months when she hands it in.”
future perfect continuous
“She has written papers for most of her classes, but she still has some papers left to write.”
present perfect
“She was writing a paper for her class when her pencil broke.”
past continuous
“She had written several papers for her classes before she switched universities.”
past perfect
“She is writing a paper for her class.”
present continuous
“She will write papers for her classes next semester.”
future simple
“She had been writing a paper all night, and she needed to get some sleep.”
past perfect continuous