Mustn’t and needn’t are not the same · exercise 1

I ___ take the umbrella. It won’t rain.

You ___ come if you don’t want to.

You ___ smoke in here. It’s not allowed.

We ___ be late. The train leaves at 13.42.

This is very important. You ___ forget what I said.

Gary sent me an e-mail. I ___ forget to reply to it.