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a hard work; hard work hard work; work hard a hard work; work hard work hard; work hard
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learn to learn learned learning
on time in time at times at the time
successful enough meaningless loud
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is; is are; are are; is is; are
SM1，SM3 SM2，SM3 SM3，SM1 SM1，SM2
to work work working worked
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study studied studying to study
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always study always is studying is always studying studies always
often usually always hardly
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