As we know, dry wood _____ fire easily.

--Remember the first time we met?---Sure. You _____________ the novel Gone With the Wind in the library.

—Your colleague's spoken English is quite good, Amy．— No wonder, as she              in the USA for two years．                  

---The window is dirty.---I know. It ______ for ages and I’m considering giving the task to our children.

Now the world’s attention ________ the stock markets，as they have a great influence on the world’s economy.