The______to the problem of this difficult subject is to study very well

• Solution

• Simple

• System

The idea of distance learning had many ______

• Opponents

• Opinion

• Limited

If you want bay this car it will be nice idea because I think it have _______.

• expensive

• cheap

• affordable

The __________requires some awareness from us in preserving it.

• environmental

• environment

• environmentally

The misuse of mobile phones by children without the knowledge of the parents has become________.

• discuss

• disaster

• disastrous

Water______ has become a threat to the lives of marine animals.

• polluted

• pollution

• possible

My ______ goal is to become one of the greatest engineers in the Kingdom of Saudi Arabia

• long-term

• gold

• short-term

One of the _______of the sun is that it gives us vitamin D

• disadvantage

• damages

• benefits

The _______ food must be balanced and meet all the vitamin requirements that the body needs

• solution

• system

• limited

The doctor ______ me with information that I did not even know about myself

• provided

• opponents

• system