学帮网There are a lot of _______（difficulty ）that have to be overcome.横线内应该用什么形式的单词?急
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There are a lot of _______（difficulty ）that have to be overcome.横线内应该用什么形式的单词?急
difficulties 复数形式
difficult， 困难名词。
变y为i加es
difficulties 作名词是复数
difficulties
定语从句中用的复数动词“have”，所以先行词difficulty应该用复数形式