Her health ____ under the pressure of work and she decided to live a balanced life from then on.
The professor explained this theory so clearly that this phenomenon was easy enough ________.
—Mike, our team will play against the Rockets this weekend. I am sure we will win.—_________.
He has devoted himself __ mankind.to benefit B. benefiting C. to benefiting D. benefited
Robert is said ____ abroad, but I don’t know what country he studied in.
Wang Gang is considering buying a computer, is considered to be a great help in our work and study.