Question

Where do new Covid-19 variants come from?

There are many thousands of different versions, or variants, of Covid circulating,
including those first identified in Kent, Brazil or South Africa.
The so-called Kent variant ________ now the most commonly found strain in the UK
and it's more easily spread than the first variant, which arrived in Spring 2020.
Scientists are looking at tweaking the coronavirus vaccines to make sure they continue
to be highly effective.
But where _______ these variants coming from? What _________ these new variants?
And why do viruses mutate in the first place?

9-INGLÊS-assinale a alternativa com as formas corretas do verbo to be para completar o texto.

1 ponto

a. am; are; are

b. is; are; are

c. is; are; is

d. are; am; is

e. are; are; is​

Answer 1

Resposta:letra "B is are are"

Explicação:

WATCH: Where do new Covid-19 variants come from?

There are many thousands of different versions, or variants, of Covid circulating, including those first identified in Kent, Brazil or South Africa.

The so-called Kent variant is now the most commonly found strain in the UK and it's more easily spread than the first variant, which arrived in Spring 2020.

Scientists are looking at tweaking the coronavirus vaccines to make sure they continue to be highly effective.

But where are these variants coming from? What are these new variants? And why do viruses mutate in the first place?