He _______ have taken your car by mistake because he didn’t have the keys.

—Have you invited Alice to our party?—Yes. But she _____ come; she is busy nowadays.

— If you listen to me, you ______ take a good rest at once.— OK, I ______ do so.

---- May I smoke here?---- If you      , choose a seat in the smoking section

---Must he remember everything he has learned in the class?---No, he _____.