--Is Jessica giving us a speech this evening? 

---No, it _____be her. She _____to Japan.

A. mustn’t ;has gone           B. mustn’t ;has been  C. can’t ;has gone  D. can’t ;has been

Miss Green isn’t in the office. She_______  to the library.

—Hello! May I speak to Alice?
—Sorry. She isn’t here right now. She ________ to the library.

—Does she like singing English songs?

—Yes. She _______ to sing English songs in her room.

A．often does  B．is often heard      C．often hears

—Hello! May I speak to Alice?

—Sorry. She isn’t here right now. She ________ to the library.

A．goes             B．went             C．has gone          D．is going