2『i'd』you should not use contractions
3『he's』you should not use contractions
4『cool』you should not use slang words or expressions
5『dr』you should not use abbreviations
6『he's』you should not use contractions
7『david has much more hair than my uncle』you should not use jokes or try to be funny
8『cheers』you should not use informal endings
『不容易 手机上 纯手打 求采纳』
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