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If you are a successful language learner, you ______ independently, actively, and purposefully.
If you are a successful language learner, you ______ independently, actively, and purposefully.
admin
2017-02-18
54
问题
If you are a successful language learner, you ______ independently, actively, and purposefully.
选项
A、had probably been learning
B、have probably been learning
C、were probably learning
D、have probably been learned
答案
B
解析
have been doing是动词的现在完成进行时形式,表示从过去某时开始一直延续到现在的行为。根据句意,选项B正确。
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专业英语四级
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