There _____ lots of traffic on the road, so I didn’t catch my plane on time.
--My son coughed badly last night. What can I do?--You ____ worry so much about it. Drinking more water will help.
–What about going to the movie tonight, Alan?--Sorry, I am busy ____ a report. ______, it is raining cats and dogs.
My grandfather is in his eighties, ______he is still in good health.
--____ Tim ____ his homework now?--He should, but he may not. He likes watching TV.
Coca-Cola began to enter China's market ______. And it’s still quite popular now.