1. I was... the truth. a) to learn b) to be learnt 2. She was glad ... her friend a) to see b) to have seen 3. A young boy was surprised ... to the ball a) to have invited b) to have been invited 4. The actor liked ... a) to be interviewed b) to have been interviewed 5. ... English is very pleasant a) to speak b) to be speaking

1. а), 2.а),3.b),4.b),5.b).