The school rules state that no child ___ be allowed out of the school during the day , unless accompanied by an adult .

—Do you know whose dictionary it is?—It ________ be Ann’s. Look! Her name is on the first page.

---Could I go boating this weekend, Dad?---Yes, you ________. But you ________ come back before lunch.

---Mum, I hurt my leg when I climbed the tree. --- You ___ that tall tree. I’ve told you many times.

－Are people around you used to _______things online?－Yes. It’s much easier, and also cheaper.