There are many ways for us to learn English. Different people have different ways. But I think the best way to learn English is1it. Do you 2 with me?

    Listening, speaking, reading and writing are all very3 in learning English. So we should learn the four English skills. While learning English, we need to4 many words, grammar(语法)rules and know about 5cultures. Some people learn English by listening to the 6 or watching TV. They try to 7 English with their friends every day. You don't need to care how badly you speak. The more you speak, the better your English will become. Some people go to the English corner to 8English. They also read English storybooks very often. When they meet a new word，they will look it up (查阅) in 9 You should also practice 10 in English every day.

    Keep trying and working hard to improve your English.

设m、n是一元二次方程x²+2x﹣7=0的两个根，则m²+3m+n=____．