by the time the course ends,___a lot about britain

问题描述:

by the time the course ends,___a lot about britain
a we'll learn b we are learning
c we have learnt d we'll have learnt

选 D we'll have learnt 将来完成时
by the time the course ends,we'll have learnt a lot about britain.
到这门课程结束的时候,我们将会学到很多关于英国的知识.