Question

By the end of this year he ______for thirty years.

By the end of this year he ______for thirty years.
选项:
a、will act
b、has acted
c、had acted
d、will have been acting

Answer 1

d、will have been acting

到今年底,他就将演了三十年了.
有BY 很明显的完成时句子.

又因为没到年底,还有将来时,就是将来完成时了.

知识在于点滴积累，更在于不懈努力。

祝你学习进步，更上一层楼！
——另外，正在冲采纳率，请记得采用，谢谢合作！(*^__^*)

Answer 2

C
过去完成时、

Answer 3

d