听下面一段材料，回答第1-4题。 1. What do we know about Clifford’s last picnic ? A. He was wet all over because of the rain . B. He had a good time with his friends . C. He stayed home in case it would rain . 2. Who will drive the car on the way to the picnic ? A. Clifford . B. George. C. Lydia. 3. Why aren’t the speakers so sure abort George’s arriving on time ? A. He often gets up late like a child . B. His car is always breaking down . C. He may be delayed by the rush hour traffic . 4. What does Lydia want to do before the picnic ? A. Walk around. B. Go fishing. C. Climb the mountains .