Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
It’s high time we _______ to the theater.
Let’s clean the classroom, ________?
— My sons are not a little restless.— Oh? Boys _______ be boys.
— Why didn’t you give a hand to the boy?— I _______, but he strggled to his feet before I tried to.
—You didn’t invite Mary to the ball?—____ her, too?