Cấu tạo của từ - Word Formation

The water is _____. You can't drink it.

• polluted

• pollution

• polluting

• pollutant

I am very _______ in the news.

• interested

• interesting

• interest

• interests

Many spacemen could never get back to the Earth because of ____ accidents.

• tragedy

•  tragic

• tragically

• tragedies

They have no _____ for help.

• expectation

• expect

• expectative

• expectancy

Boys and girls may behave _____ in this situation.

• difference

• differing

• different

• differently

All of us were _____ that he was successful in the final exam.

• surprising

• surprisingly

• surprise

• surprised

One recent ________ in medicine is the development of laser in treating cancer.

• achievements

• achievement

• achiever

• achieved

You have to be aware of the damage humans are doing to quicken the ________ of wildlife.

• extinct

• extinctive

• extinctions

• extinction

He was finally _________ in his final attempt.

• successful

• successive

• unsuccessful
  

• success

They did everything possible to _______ the police force.

• strengthen

• strengthening

• strength

• stronger