将下列各句改成否定句和一般疑问句。 1. Their teacher is prom England. _____________________________ _____________________________ 2. She has a nice volleyball. _____________________________ _____________________________ 3. Lucy and Lily are Americans. _____________________________ _____________________________ 4. They have dinner at 5:30 every day. _____________________________ _____________________________ 5. Kate is playing with a cat. _____________________________ _____________________________ 6. We have a small sports collection. _____________________________ _____________________________