Question

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Answer 1

Resposta:

1- a) there are

b) there are/there are

c) there is

d) there is

2-a) there aren't other methods to analyse self- evaluation tests.

are there other methods to analyse self- evaluation tests?

b) there isn't a deadline for the research

is there a deadline for the research?

c) there aren't difficult problems to solve

are there different problems to solve?