12 Change each sentence starting it with a gerund. Model: It's tiring to study late at night. – Studying late at night is tiring. 1. It's hard to get up early. 2. It's interesting to visit other countries. 3. You are not allowed to smoke here. 4. It's relaxing to listen to music. 5. It's not necessary to call him now. 6. You are forbidden to park here.