By the time we reach that page, we ___________ twenty lessons of the book.A．will studyB．will have st

题目简介

By the time we reach that page, we ___________ twenty lessons of the book.

A．will study

B．will have studied

C．would study

D．have studied

题型：单选题难度：偏易来源：不详

这题考查时态，时间是：By the time+时间状语从句，“到…时间为止”，主句用相应的过去时，因为时间状语从句用的是一般现在时代替将来时，所以主句用将来完成时。句意是：到我们学到那一页为止，我们将已经学了20课了。选B。