the math problem was so difficult that none of us could work it outthe math problem was (-----)(-----)(------)(-----)(-----)of us (-----)(-----)(----)

问题描述:

the math problem was so difficult that none of us could work it out
the math problem was (-----)(-----)(------)(-----)(-----)of us (-----)(-----)(----)

The math problem was (a) (piece) (of) (cake) (and) (all) of us (easily) (solved) (it).

very difficult so that all , can't solve it

so difficult that no one
could solve it
希望帮的上忙