2. I took my umbrella on the walk, but the sun shone the whole time, so I needn't have taken it.
3. I bought a new coat, but I didn't need to buy it because my old one was really OK.
4. I managed to do all the homework by myself so I didn't need to phone any of my friends.
5. I called Indira to tell her about the party, but I needn't have phoned her because she already knew.
6. I was going to buy a new camera but I needn't have bought one in the end, because my parents gave me one for my birthday.