1. Make the sentences negative.
-My aunt often tries to help me.
-There were some mistakes in the letter.
-We have much money to spend.
-She heard some noise outside.
-Lomonosov founded Moscow university.

My aunt doesn't try to help me often.

There were no mistakes in the letter.

We don't have much money to spend.

She didn't hear any noise outside.

Lomonosov didn't found the Moscow university.