For the sake of enough time for study and rest, students are _____ from using cellphones in our school.

Not until _________ did man accept thatfact that all living things must die.

While there are some differences in the educational systems in many countries in the world，education is ________.[ ]

___ she will join us in the game is not decided yet

Which of the two poems do youlike better— ____ short one, of course. I think it’sreally ___ most interesting one.