Understanding what is going on & making hypotheses : using present continuous and modals MIGHT/ MAY / MUST / CAN'T + verb

A phone is ringing, a woman is answering it - Suddenly a man appears behind the woman. What is going to happen ? Who are they ? And who is the man on the other end of the phone ? 

Dial M For Murder - Murder Sequence - Making Hypotheses

dial-m-for-murder-murder-sequence-making-hypotheses

Let's do English ESL general grammar practice. Understanding what is going on & making hypotheses : using present continuous and modals MIGHT/ MAY / MUST / CAN'…