Twofifthsofthehighway

問題詳情：

Two fifths of the highway________so far.

A．has been completed                             B．was completed

C．have been completed                           D．has completed

【回答】

分數在此指代的是the highway，與complete之間在邏輯上是被動關係，由so far可知用現在完成時。

*：　A

知識點：動詞時態

題型：選擇題