One of our rules is that every student ________ wear the school uniform while at school.
27. ––Do you want to go to the cinema tonight?––Sorry, I’m so tired. I an early night.
26. With age, the mineral content of human bones decreases, ______ them more fragile.
25. Let’s go a little faster, _________we’ll never get there on time.
24. ––How long have you been here?––Only about five minutes. Henry and Simon ______ here with me.
23. ––Was ______ problem solved?––We were trying to think of ______ way out, but it was difficult to find one.