1. What are your plans for the weekend? (do) What 2. Peter knew how to skate when he was 12. (could) Peter 3. The last time they visited Europe was two years ago. (not) They 4. Robots are not as intelligent as humans. (than) Humans 5. How long have you learned English? (start) When

$#Pi$

1. What are your plans for the weekend? (do)

→ What are you going to do at the weekend?

2. Peter knew how to skate when he was 12. (could)

→ Peter could skate when he was 12

3. The last time they visited Europe was two years ago. (not)

→ They haven't visited Europe for two years

4. Robots are not as intelligent as humans. (than)

→ Humans are more intelligent than robots

5. How long have you learned English? (start)

→ When did you start learning English ?