Our history teacher is very ______ with us. He doesn’t allow us to be lazy.
--- Whose backpack is this? --- It be Mary’s. She is looking for hers.
Mr. White is fixing his computer because there is __________ wrong with it.
— What about a drink of tea? —Hurry up. There is time for a drink.
I have a lovely doll. You can also buy ______ in a toy shop.
—Is the boy in white clothes your friend, Kangkang? —No. ____ in black clothes is.