—Must I go there right now?—No，you ________.You ________ go there before supper.

---When shall we meet your cousin at the station? ---His plane took off 2 hours ago, and it _________ arrive at 5pm.

—Is that boy Alan?—No, it ______ be him. He left for Beijing yesterday.

It was a fine day yesterday. I ________ have taken my raincoat with me.

Delta, the American airline, is sometimes jokingly explained “Don’t expect your luggage to arrive” because it ______ be very slow.