III. Fill in the correct preposition. in off by on 1. My mum is going to Moscow half an hour. 2. Travelling plane is expensive. 3. I was there

III. Fill in the correct preposition. in off by on 1. My mum is going to Moscow half an hour. 2. Travelling plane is expensive. 3. I was thereto see my cousin . 4. My town is surrounded many villages. 5. He got the bus and took a window seat.