I won’t tell the student the answer to the math problem until he ________ on it for more than an hour.
________ 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.
The two friends had a quarrel about money, but shortly afterwards they shook hands and ________.