阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
The adobe dwellings (土坯房) 61 （build）by the Pueblo Indians of the American Southwest are admired by even 62 most modern of architects and engineers. In addition to their simple beauty, what makes the adobe dwellings admirable is their 63 (able) to “air condition” a house without 64 ( use) electric equipment. Walls made of adobe take in the heat from the sun on hot days and give out that heat 65 ( slow) during cool nights, thus warming the house. When a new day breaks, the walls have given up their heat and are now cold enough 66 (cool) the house during the hot day; 67 the same time, they warm up again for the night. This cycle 68 (go) day after day: The walls warm up during the day and cool off during the night and are thus always a timely offset(抵消) for the outside temperatures. As 69 (nature) architects, the Pueblo Indians figured out exactly 70 thick the adobe walls needed to be to make the cycle work on most days.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
built
动词build和the adobe dwellings是逻辑上的动宾关系，应用过去分词作后置定语。
“___by the Pueblo Indians of the American Southwest ”是定语，修饰the adobe dwellings，the adobe dwellings和build之间是被动关系，故用过去分词作定语。
没有掌握非谓语动词的用法。
the
most modern表示最高级，前面要加定冠词the，固定用法。
most modern是最高级，最高级前要加定冠词the。
定冠词误用。
ability
their为代词，后面应接名词，因此able要改为名词形式。
their是形容词性物主代词，修饰名词。故该空要填名词ability（能力）。
名词使用错误。
using
介词without后接动名词use去掉字母e再加-ing。
without是介词，后面跟动名词作宾语。
没有掌握非谓语动词的用法。
slowly
用slow的副词形式slowly修饰动词give out。
修饰动词give out，用副词。
副词使用错误。
to cool
形容词加enough后接不定式。
“sb./sth. be +adj.+enough+to do sth. ”是固定句式，意为“某人/某物足够做某事”。故该空要填to cool。
非谓语的误用。
at
at the same time是固定词组，意为“与此同时”。
“at the same time”意为“与此同时”，是固定短语。
没有掌握该介词的用法。
goes
根据上下文，此处用一般现在时态。这种循环日复一日。
结合上下文语境可知，该句是对这种自行车的介绍，故要用一般现在时。且主语为this bicycle（第三人称单数），根据主谓一致原则，该空要填goes。
时态误用。
natural
architects为名词，应用形容词修饰，故应为natural。
修饰名词architects，要用形容词。
形容词误用。
how
根据句意，应用how修饰形容词thick，连接宾语从句。
句意：美国西南部印第安人们清楚土胚墙需要多么厚才能最好地保证房内冷热的循环。“____thick the adobe walls needed to be to make the cycle work on most days”是figure out的宾语从句。由句意可知，该从句要用how引导。how修饰形容词thick，意为“多么”。
对名词性从句的掌握不牢。