COVID-19 is an infectious respiratory illness caused by a newly discovered coronavirus called SARS-CoV-2. 'CO' stands (26) ____________ corona, 'VI' for virus, and 'D' for disease.

Many COVID-19 symptoms are similar to those of the flu, the common cold and other conditions, so a test is required to confirm if someone has COVID-19. Symptoms may (27) ____________ 2 to 14 days after exposure to the virus and can range from very mild to severe illness. Some people (28)___________ have been infected don't have any symptoms.

The most common symptoms are fever, cough, and tiredness. Other symptoms can include shortness of breath, chest pain or pressure, muscle or body aches, headache, (29) ____________ of taste or smell, confusion, sore throat, congestion or runny nose, diarrhea, nausea and vomiting, abdominal pain, and skin rashes. In addition to these symptoms, infants may have difficulty feeding.

Children of any (30) ____________ can become ill with COVID-19. While children and adults experience similar symptoms, children generally have less serious illness than adults.

(https://www.unicef.org/stories/novel-coronavirus-outbreak-frequently-asked-questions)

26. A. with

B. for

C. on

D. into

27. A. grow

B. observe

C. look

D. appear

28. A. who

B. which

C. whom

D. where

29. A. death

B. pain

C. loss

D. danger