1.() is not necessary for them()the whole way.第一个空是is 还是this
1.() is not necessary for them()the whole way.第一个空是is 还是this 第二个空是to walk,walking
2.The mother always tells her son a story before he()用括号的词组做(go to sleep) 3.Laughter is a way in which we can be a part of a group and it can make us () more comfortable with others,用括号内所给词的正确形式填空(but,well happen languae feel funny why quiet stress hand)