________ is now no ________ that global warming is a security threat to us all.
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.”
Life is like a long race ______ we compete with others to go beyond ourselves.
—It’s so nice to enjoy the sunshine here on the green grass.—You ______ us a right place.