No one knows when such a custom first _____.
There was a traffic jam. ___________,he was late.A As a result B As a result of C As the result D As result
The population of China is larger than ______ of the United States.
Did he find hard to learn a foreign language?
Tom kept quiet about the accident ________ lose his job.
— It’s such a pity. I didn’t get the first place in the exam. — Come on. __________