On December 10,2013,many world’s top leaders went to Johannesburg _____Nelson Mandela, who had passed away.
---A stranger gave me an umbrella when I was caught in the rain. ---________.
________ more energy to my study instead of being crazy about Internet games, I would be sitting in a comfortable office now.
My parents lent me the money. ________, I couldn’t have afforded the trip.
After the storm in Beijing, people were suffering in that area, ________ urgently needed clean water, medicine and shelter to survive.
The past two years ________ a sharp rise in oil price, which adds to the burden of auto transportation industry.