—Why not paint the Golden Gate Bridge blue or other colors?—The bridge has always been painted "International Orange" ______ that color is easier to see in the heavy fog.
---Don’t smoke here, please. ---______.
---To achieve a bright future, we should ___ study hard ___ keep in good health.---I agree with you.
---I have great ___ in learning physics and I’m so worried. Could you help me?---Sure, I’d be glad to.
After a long walk in the sun, they wanted to drink _____.
---___ sweet music! Do you like it? ---Mm, it ______ beautiful!