______ asked to help me with my lessons, he always refused, saying he was too busy.
----You seem to have known Dr Smith for a long time.---- That’s true. ______ he joined our club six years ago.
----I don’t mind telling you what I know. ----You ________. I’m not asking you for it.
The Mid-Autumn Day, which is a day for family reunion in China, _____ on September 12th this year.
Three years ago in Beijing, my best friend, David, was hit by a car while riding a bike, _______ a terrible brain injury.
The rise in wood fuel use has _____ the disappearance of forest and the loss of habitats for pandas.