_____ on everyday practice,progress in English is a goal whi
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整个句子理顺为:(主语) progress in English is a goal which can be achieved(that is based) on everyday practice

简单说就是主语跟前面句子的关系是靠be based on 省略be 可以理解为被动 也可以理解为固定句式

例句 Facing this situation,I feel very sorry

主句我跟前面句子是主动关系 使用动名词形式