根据句意及首字母提示在横线处填上恰当的单词,使句子意思完整,语法正确。 1. There is a long water s_____ in the Water World. 2. The vegetables at the m______are cheaper than those at the supermarket. 3. I kept waiting for my girlfriend for two hours but she didn't______up. 4. All the s______in the restaurant are very kind and helpful. 5. The boy jumped up and down like a c______. Everyone laughed.