What wereyou trying to prove to the police—I was last night

I think the man over there must be Bob.— It _______ be him. He has gone to England.

My friend with my host family in the USA as an exchange student led me into a world where I would not have enjoyed American culture so much[ ]

There are students in our school.

Could you tell me _________—I’m planning to teach in the west ofChina.