【小题1】Betty is generous to her friends, she often buys presents for them.
【小题2】Thegenerous （长度）of their summer holiday is about two months.
【小题3】Drinking a glass of milk every morning is good for our hlength .
【小题4】I got 10points and he got 6points, so he did the exercises more clength than I.
【小题5】English is one of the most important lHealth .
【小题6】There is a lot of tcarelessly on the road at8 a.m. every morning.
【小题7】The Three space Health (英雄) returned to Beijing on September 29th.
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解析：
【小题1】此题考查形容词，根据句意可知贝蒂经常给她的朋友买礼物，说明很慷慨be generous to sb
【小题2】此题考查名词，根据句意可知暑假大约两个月时间，故用名词length“长度”
【小题3】此题考查名词，根据句意可知每天早上喝一杯水对我们的健康有好处，be good for+名词
【小题4】此题考查副词比较级，根据上句I got 10points and he got 6points提示，他做练习比我粗心
【小题5】此题考查名词，根据句意，英语是最重要的语言之一，one of +名词复数
【小题6】此题考查名词，根据句意，每天早上8点公路上车辆很多，traffic为不可数名词
【小题7】此题考查名词复数，根据前面数词Three提示名词用复数，hero变复数加es