—What made little Tony so unhappy and cry in his room?— ______ to go hiking with his brother.

_______ with care, one paper-bag will last for six weeks.

 _____ from other continents for millions of year, Australia has many plants and animals not found in any other country in the world. 

 With exports ______ a big role in its economic growth, China has been affected by the current financial storm.

 When I returned home ,I found the window _____and something____.