The math problem seems very easy, but in fact it is very difficult_______.
The child was lost in the forest, where he was _____ the mercy of wild beasts.
Though this has been written _____ the agreement, it is not protected _____ law.
I certainly agree _____ your suggestion. But I wonder if all the members of the board will agree _____ the steps for the coming year.
--- Tang Gonghong is indeed too large, I think. --- But _____ that she is an excellent weight-lifting athlete.
Mr. Johnson starts to work very early in the morning and goes on working until late in the afternoon _____ a break at midday.