[简答题]
{{B}}第一节 短文改错{{/B}}
此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：
多一个词：把多余的词用斜线(—)划掉，在该行右边横线上写出该词，并也用斜线划掉．
缺一个词；在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。
错一个词；在错的词下划一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。

Early men did not have clocks. They were told time 76. ______
by the sun and shadows of trees. At first time, they used 77. ______
sticks placed in the ground instead trees. They made 78. ______
marks in the ground, and the shadows from the sticks told 79. ______
the time of day. Later, men began to use sundials. Some of 80. ______
sundials were boxes with sticks cast a shadow. Men were 81. ______
able to take the sundial box with them. The mark for noon 82. ______
was very important. The sundials always have to face the same 83. ______
way or t