.
第二节 单句改错（共5小题；每小题1分，满分5分）
下列句子中每句仅有一处错误，请按下列情况改正：
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。
86. Carla earns her livings by teaching violin.
87. Whether we’ll go camping tomorrow depend on the weather.
88. Jenny has a large collection of stamps, all of them were bought in Canada.
89. We don’t consider that necessary for them to move into that house.
90. We all agree the boy really has gift for music.