This printer is of good quality. If it() break down within the first year, we would repair it at our expense.
The public transportation in this city is very convenient, where many buses run ______.
The purse found on the playground matches the ______ by Mary, so it must be hers.
The road ______ for vehicles is under repair. Drivers are required to take some other routes.
—When shall we go planting trees in the hill? —______ it begins to rain, so they don’t need watering.
World Expo 2010 Shanghai China, a grand-scale global event, has ______ the significant theme “Better City, Better Life.”