Kids, I hope you'll remember the good old days____we spent together in junior high though it's time to say goodbye. ( )
A.whoB.whatC.which
– Listen ! Is Professor Johnson giving a report in the hall? – No, it _______ be him. He has gone to America.
You ________ cross the road when the traffic lights are red.
---- go swimming with Dad , Mum? ----No ,you needn’t. You can go bike riding.
--- Who’s singing in the bathroom? --- It ________ be Mr. Brown. Nobody sings like that except him.
—You_________ be happy with the strong public support you’ve received. —Yes, you’re right. I’m really excited.