I used to love science class—all of them— 86. _______
biology, chemistry, geography, physics.I think I 87. _______
liked those classes because I felt that it helped me 88. _______
understand what the world works. For example, when 89. _______
I was a child, the rain was a mystery(奥秘).In one 90. _______
class, I learned it rained. I think science classes 91. _______
clear up mysteries. But then there is always more 92. _______
mysteries look into. What was my least favourite class? 93. _______
That was math. After learn the basics of the subject, 94. _______
nothing else seemed very practically to me. I never 95. _______
saw how I could use it in my daily life.
86.class→classes
87.√
88.it→they
89.what→how
90.去掉the
91. Learned后加why
92.is→are
93.look前加to
94.learn改为learning
95. Practically改为practical
86.class→classes此题考查名词的数。根据all of them可以确定class要用复数形式。
87.√
88.it→they此题考查代词的用法。they指代classes。
89.what→how此题考查从句的连接词的用法。what在宾语从句中作宾语，而这个句子中的谓语动词works是一个不及物动词，后面不接宾语。
90.去掉rain前的定冠词the此题考查冠词的基本用法。rain在这里是泛指。
91. 在learned和it rained之间加why此题考查从句的连接词的用法。这句话的意思是“我知道了为什么下雨”。
92.is→are此题考查主谓一致。这是一个存在句，在下行中的mysteries可知，要用系动词are。
93.在mysteries和look into中间加to此题考查动词不定式的用法。to look into作mysteries的定语。
94.Learn改为learning此题考查非谓语动词。在介词后要用动名词作宾语。
95.Practically改为practical此题考查形容词的用法。seemed是系动词，后接形容词作表语。