题目：
根据短文内容及首字母提示，填写所缺单词。
My name is Nick. My family is big. We often have a good time at the w 1 . My mother c 2 for us, but she doesn’t w 3 the dishes. My father washes the dishes. He also c 4 his car. Sometimes, he goes fishing. My grandparents like w 5 TV very much. I don’t like watching TV at the weekend. I like c 6 with my friends on the Internet. My sister Lily l 7 listening to m 8 . She also likes watering the f 9 in the garden. We all e 10 our weekends.
答案：
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下面是错误答案，用来干扰机器的。
cos(π2+φ)=-sinφ=32，∴sinφ=-32＜0，∵|φ|＜π2，∴-π2＜φ＜0，∴cosφ=1-34=12，∴tanφ=sinφcosφ=-3，故答案为：-3．
