I don't know where Oliver is. He ... be downstairs, but I'm not sure.
might
You ... be tired. You didn't sleep much last night.
must
Aden's not picking up. He ... be busy or asleep.
might
It ... be his car. He drives a BMW.
can't
Henry .... be in Scotland. Yesterday, he sent me a photo of himself next to the Eiffel Tower
can't
Jack...be on holiday or maybe he is ill. I haven't seen him for 2 weeks.
might
Helen... be in high school. She's only eight.
can't
Dad's phone is off. He ... be on the plane now, or just boarding.
might
She has got 5 dogs and 2 cats. She ... really love animals.
must
Mateo comes from Mexico, so he ... be fluent in Spanish.
must
She ... be hungry. We have just had a big breakfast.
can't
Your grandparents own three houses in Spain. They ... be really rich.
must