--Jack, is this your jacket?--No, it _______ be my jacket. My jacket is black but this one is blue.
I'm ____ heavier than my brother.
--Would you like tojoin us,Jack?--Yes, ____ .But I have to do my homework first.
– You didn’t do well in your English test last week.- Sorry.I will study _____ next time.
She always eats ____ food.
Our teacher has ____ to tell us,please keep quiet.