should / shouldn't

We ______ think about saving nature more often.

They landed two hours ago so they ________ be here soon.

________ you need any help, feel free to contact administrator.

You _______ go outside late.

Those children _______ be playing near the road.

Janice demands that Jack ________ apologize to her.

They _______ be helping their parents more as they are old.

We ______ stop him! He is going to commit a crime! 

You … eat too much salt and sugar.

You really ______ start eating better.

The parcel is fragile. You … throw it.

It’s quite cold today. We … wear our jackets.