单选题 People now understand the need to ______ their homes to improve airflow and get rid of viruses that may cause disease.

单选题 The new museum is designed in a manner to ______ the interest of children and young adults in science and technology.

单选题 If your stress is ______ into more serious issues, you should reach out to a licensed professional to get a treatment plan that will help you.

单选题 While the energy market share for coal ______ decline in many parts of the world, coal will remain the most common source of energy in years to come.

单选题 The dock was constructed on a(n) ______ scale with the most modern equipment, designed to enable rapid loading and discharge of vessels.

单选题 With your generous support, our charity fund will be ______ for continued growth and success for many years to come.

单选题 Computers, vehicles, paintings, furniture, etc. are all ______ assets that are characterized by their movability.

单选题 Advances in mobile phone technology have enabled the rapid development of ______ communication, such as instant messaging and voice chatting.

单选题 This study was conducted to test the ______ that exposure to urban air pollution contributes to the development of chronic lung diseases.