Modals of deduction

That _____________________ be John. He said he was going to travel to Australia.

All passengers ___ put on their seatbelts during take-off and landing.

He’s not picking up the phone. He ____ be home yet.

I ___go to the cinema to watch a movie, but I’m not sure.

My mother gave me an important letter to post, so I ___ forget to post it.

Don't eat it! It ___ be poisoned!

We ___ watch TV tonight. We haven’t decided yet.

.You ___ take an ID card with you if you enter the stadium. Otherwise you won’t get in.

 Your mother ___ be a great cook. You are always so keen to get back home to eat!

Do you know where Carl is? He  ____be out - his car keys are on the table.