1.

That actor has so many words to say in the play. How can he remember them all? He  MUST HAVE   a good memory.

2.

Luisa has won one of the most important scholarships to the United States. Her parents MUST   feel very proud.

3.

Robinson is scared of heights, but his brother, Fernando, climbs mountains every weekend. Fernando  CAN'T   be scared of heights.

4.

When explorers first sailed to the Americas they didn't know what they would find there. They  MUST HAVE   had a lot of surprises.

5.

Madonna is going to the premiere of her new film at Meyer cinema tonight. Look at the fans waiting outside! They  MUST   be hoping to see her.

6.

This old suit of armour is quite small. Its owner  CAN'T HAVE   been tall.

7.

Who won the race? That runner looks disappointed. He  CAN'T HAVE won.

8.

Luciana and Mariano have been bad-tempered ever since they opened that letter. They  MUST HAVE   received some bad news.

9.

The wildlife photographer was very close to the lion, but it went on washing itself calmly. It  CAN'T HAVE   heard anything.

10.

My friend Kathia says the President has invited her to the White House, but I don't believe her. She  MUST   be lying.