—________ you open the window, please? —Yes, I can.

My car is covered with thick snow and now the engine simply ______ start.

—Why are those people gathering in the middle of the street?—I don’t know. There ________ be an accident.

You ______ be polite to the old man.

Tom likes driving and he ______drive his car to the party, but I’m not quite sure about it yet.