So far we ______ the first two chapters.

(A) had overviewed
(B) have overviewed
(C) overviewed
(D) overview


【参考答案】

B
解答参考：本句中so far的意思是到现在为止‖，有这样的时间状语时，谓语动词一般用现在完成时态。【译文】到......

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