Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子。每空格限填一词）
【小题1】I am not busy today, I _________ _________ to have a picnic in the countryside with my friends this afternoon.（go）
【小题2】I __________ the Great Wall yesterday.（visit）
【小题3】Look, each of the students ____________ to the teacher carefully .(listen)
【小题4】She needs a lot of money _________ her mother’s life. （save）
【小题5】He can ________ us a lot. （help）
【小题6】We should exercise _________ to stay healthy. (regular)
【小题7】Autumn is a good season for people to go __________.（out）
【小题8】It’s _________ to drink a lot of water every day. （use）