Question

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1.According to the rules. It's necessary for students to hand in their assignment on time.

→ Students....................................................................................................

2.It isn't necessary for cathy to buy new text books because she can brrow them from library 

→ Cathy......................................................................................................

 

Answer 1

.........don't have to hand in their assignment on time

........doesn't have to buy  new text books because she  can borrow them from library