题目内容

We _____ more than 1,600 words since we began to learn English.
A．learnB．have learned
C．learnedD．are learning
B

试题分析：句意：自从我们开始学英语我们已经学了1600多个单词了。现在完成时表示过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态。结合句意，故选B
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