答案:C
解析:
Choice (C) is correct. It avoids the verb tense error of the original. The past tense verb "remained" is not consistent with the present perfect tense verb "have made" and should be changed to the present tense verb "remain."
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答案:C
解析:
Choice (C) is correct. It avoids the verb tense error of the original. The past tense verb "remained" is not consistent with the present perfect tense verb "have made" and should be changed to the present tense verb "remain."