When he walks______my desk，he knocked my books and pens _____the floor．

Reading her biography, I was lost in admiration for _____Doris Lessing had achieved in literature.

_____________ your sister have a computer—Sorry, I don’t think she has ______________.

58. It is said that a collection ofpaintings by David is _____ exhibition at the Museum.

The insuranceseller tried to_____the old lady to buy insurance, but invain.[ ]