作业帮It's hard ________ (learn) English well.
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 12:31:30
It's hard ________ (learn) English well.
It's hard ________ (learn) English well.
It's hard ________ (learn) English well.
to learn
be hard to do sth.
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来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 12:31:30
It's hard ________ (learn) English well.
It's hard ________ (learn) English well.
It's hard ________ (learn) English well.
to learn
be hard to do sth.