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）