When he walked ________ my desk,he knocked my books ________ the floor.
—Do you like the trousers?—Yes. ______.
The store sells sweaters _____ a very good price. We can buy one ______ 40 yuan.
—Is that your father? —No. It’s my uncle, my mother’s _____.
—Does Bob have vegetables for dinner? —______. But his sister has some carrots.
—Excuse ______. Is this ______ book?—Yes, thanks.