chia động từ 51-80

Their ______ has lasted a lifetime.

• friendship
• friend
• friendly
• friends

His son's _______ has not improved much.

• behavior
• behave
• behaved
• behaviors

He draws cartoons for a _____ magazine.

• humorous
• humor
• humorously

For some people, UFOs only exist in films for ______ .

• entertainment
• entertaining
• entertain
• entertained

The gas from the chemical factory is extremely _______.

• harmful
• harmless
• harm
• harmly

Environmental _______ is everybody's responsibility.

• protection
• protective
• protections
• protect

Air and water are _______ in our life.

• necessary
• unnecessary
• necessity
• necessarily

In the future, many buildings will be ______ by solar energy.

• heated
• heat
• hot
• heating

My brother can repair electric _______ very well.

• appliances
• appliance
• apply
• application

We want to buy ______ that will save money.

• products
• production
• productive
• productivity