I have written to him because he phoned me shortly afterwards.
Energy, passion and a burning desire are, you see, ________ true learning takes.
—Where did you come across our Chinese teacher?—It was in the supermarket ________ I purchased mooncakes.
With Father’s Day around the corner ,I have taken some money out of the bank ______ presents for my dad.
The idea of traveling abroad really a lot of Chinese people. That’s why every year witnesses more people applying for passports.
We are confident that the environment ______ by our further efforts to reduce pollution.