1 . 请你修改以下的每个句子，每句有1处语言错误，错误涉及一个单词的增加或修改。
增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
修改：在错的词下面划一横线，并在横线下面写出修改后的词。
注意：每处错误及其修改仅限一词。
1. It is no doubt that what he said is true.
2. In my opinion, his suggestion is well worth consider.
3. You could ask your teacher for help when you're in the trouble.
4. It was in the street what I met one of my old friends yesterday.
5. He was sentenced to die because he murdered his wife.