Allen had to call a taxi because the luggage was( ) to carry

一too much的中心词是much,用法与much相同,用来修饰不可数名词。例如:We both have too much work to do。我们俩都有很多工作要做。She spent too much money on clothes。她花太多钱买衣服。The teacher told him not to spend too much time playing games。老师叫他不要花太多时间玩游戏。I'm afraid that I've given you too much trouble。恐怕我太麻烦你了。另外,too much还可作名词性短语,用作宾语; 也可作副词性短语,在句中用作状语,修饰动词。例如:You've given me too much。你给我的太多了。I have too much to do every day,so I am very busy。我每天都有很多事情要做,所以我很忙。He talked too much at the meeting,didn't he?他在会上讲得太多了,是吗?Don't eat too much。不要吃得太多。二much too的中心词是too,用法与too相同,用来修饰原级形容词或副词。例如:You're walking much too fast。Slow down。你走得太快了,慢点。I'm afraid that this cap is much too big for me。这顶帽子我戴恐怕太大了。It's much too cold outside。You'd better put on your overcoat。外面太冷了,你最好把大衣穿上。选A还有其他疑问的话可以去“状元365提问”规律方法：由以上区别可知此处用much too修饰原级形容词heavy