国家开放大学 / 综合英语（1）
正确率：100%
– He was really disappointed.
– He can’t go on _ _ _ _ forever.
a. been depressing
b.being depressed
c.to be depressed
d.be depressed
– He can’t go on _ _ _ _ forever.
a. been depressing
b.being depressed
c.to be depressed
d.be depressed
参考答案：