The leader demanded from his members a

serious attitude towards work, good team spirit, and that they work hard.

Câu 5: The earth is the only planet with a large number of oxygen in its atmosphere.

Not until he got home he realized he had forgotten to give her the present.

Developing new technologies are time-consuming and expensive.

A novel is a story long enough to fill a complete book, in that the characters and events are usually imaginary.

Regarding as one of the leading figures in the development of the short story, O Henry is the author of many well- known American novels.

If you work hard, you would be successful in anything you do.