1 . －Mom’s gift? She _______ have chosen a better one for me.
－She must be very happy to know it.

A．should

B．might

C．couldn’t

D．mustn’t

2 . — Do you know where David is? I couldn’t find him anywhere.
— Well. He ________ have gone far — his coat is still here.

A．shouldn’t

B．mustn’t

C．can’t

D．wouldn’t