— If you prefer the red evening dress, you’ll have to pay ________ 30 dollars, because it’s made of silk.— Ok. Here you are.
I was not quite sure __________.
—Haven’t you been to the Great Wall?—__________, but I will go there with my family one day.
I often see my mother __________ chess with my father after supper.
Look, the children are playing ______. They are all very ______.
If you don’t know how to use the word, you should _________ in a dictionary.