Since her ..... the room has been full of laughter.

A. arrival B. arrive C. arriver D. arriveness

That little girl can dance .......

A. beauty B. beautiful C. beautifully D. beautify

What’s your _______? – I’m Vietnamese.

A. nation B. national C. nationality D. international

Nowadays, chemicals are ______ into some fruits to reduce decay.

A. injection B. injecting C. inject D. injected

Farmers can enrich the soil by using ______.

A. fertile B. fertility C. fertilize D. fertilizer

Life here is very _____.

A. peaceful B. peacefully C. peace D. peacefulness

To Americans, it is impolite to ask someone about age, ________and salary.

A. marry B. married C. marriage D. marrying

The panda’s __________ habitat is the bamboo forest.

A. nature B. natural C. naturally D. natured

WHO’s main activities are carrying out research on medical _______ and improving international health care.

A. develop B. developing C. development D. develops

Vietnamese athletes performed_______ and won a lot of gold medals.

A. excellent B. excellently C. excellence D. excel