Mary sits ______ Mike and Lily.[ ]
Dad, please tell me when Mum_____. I miss her very much.——She will return when she_____her task. And she will bring a nice present for you.
Who’s that man over there standing in the garden? Is it Mr. White?—It __________ be him. He has gone to Shanghai on business.
I usually_______ books in the morning.
_________ do you go to movies?—Once a month..