______ Tom be in his office so late at night ?

—Could you please come to the museum with me this afternoon?—Sorry，I ________．I have to take a piano lesson at 2 pm．

Take care! Accidents _________ happen along this part of the road.

---Shall we meet at the station at 7 am?---In fact, we _______. The train _______ until 9 a. m.

I can’t go to the cinema with you because I  _______ stay here until my mother comes back.