国家开放大学 / 综合英语（2）
正确率：100%
I'm afraid the box is _ _ _ _ _ heavy _ _ _ _ you to carry it.
a.too, to
b.too, for
c. enough, for
d.enough, to
a.too, to
b.too, for
c. enough, for
d.enough, to
参考答案：
佳题速递：