填入所缺英语单词:One always had to guess what he was s____补充1、But he just could not u_____2、I always remember to teach my students by s_____ them the right ways to do things.

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填入所缺英语单词:One always had to guess what he was s____
补充
1、But he just could not u_____
2、I always remember to teach my students by s_____ them the right ways to do things.

标题的填 saying
1 understand
2 showing

saying
understand
showing

shown
understand
showing