根据句意及汉语提示填空。 1. I can lend you some _____ (磁带) of her songs. 2. I have many musical instruments. I can play the _____ (小提琴). 3. I called you yesterday evening. _____ (没有人) answered. 4. I'm not sure _____ (是否) he will come or not tomorrow. 5. He is very funny and often makes us _____ (笑).