— My sons are not a little restless.— Oh? Boys _______ be boys．

---Must Jack come to sign his name on the paper?---Yes, he_____ .

No student______ go out of school for snacks during the break without the teacher’s permission.

 --- Don't worry. I've just sent an ambulance to you. They ________ be there any second.

 My sister met him at the street yesterday afternoon, so he __________ your lecture.