Question

passage
The recent outbreak of COVID-19 was discovered in 2019 and it is caused by
the SARS COV-2 or Severe Acute Respiratory Syndrome. The 'Wet Market
of Wuhan Province of China(a) ____ (are, is, has)known for selling bats
and other live animals. In December 2019, several cases of pneumonia and
respiratory tract diseases (b)
(was, were, is)observed in Wuhan.
The medical unit of Wuhan (c) (claim, claimed, claims)that there was
a mysterious virus infection common in all these patients. Scientists
researched and announced the arrival of a slowly growing pandemic. Now,
208 countries around the globe (d) __ (have, are, is) fighting with this
deadly virus.​

Answer 1

Explanation:

a) are

b)were

c) claim

d)are