Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
On April Fool’s Day people often play tricks _____ others.
Middle school students are not permitted _______.
Do you still remember the museum _____ we visited three months ago?
She is pleased with _________ you have given her and all that you have told her.
I think it is unfair, ___________?