Cho dạng đúng của từ

Their _________________ has lasted a lifetime. (FRIEND)

His son's _________________ has not improved much. (BEHAVE)

He draws cartoons for a______________ magazine. (HUMOR)

For some people, UFOs only exist in films for______________. (ENTERTAIN)

The gas from the chemical factory is extremely ___________________. (HARM)

Environmental ________________ is everybody's responsibility. (PROTECT)

Air and water are _________________ in our life. (NECESSARY)

In the future, many buildings will be _________________ by solar energy. (HOT)

My brother can repair electric _____________ very well. (APPLY)

We want to buy ________________ that will save money. (PRODUCT)