I about 1,500 English words so far.A. learned B. learnC. have learned D. am learning 题目和参考答案——青夏教育精英家教网—

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( ) 2. I about 1,500 English words so far.

A. learned B. learn

C. have learned D. am learning

2.C so far.“至今”，用现在完成；时态，故选C

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