1 . I________ there so early because she didn't come until 10.

A．didn't need to get	B．couldn't have got
C．needn't have got	D．mustn't have got

2 . I didn’t see her in the meeting room this morning. She _____ at the meeting.

A．mustn’t have spoken	B．shouldn’t have spoken
C．needn’t have spoken	D．couldn’t have spoken

3 . —I saw Mr. Black on the playground this morning.
—You ________. He’s still on holiday in Sanya.

A．can’t	B．couldn’t have
C．mustn’t have	D．needn’t