Questão 34

Read the extract and answer question.

A very healthy food

    A recent study, carried out by the Federal University
of Pará, concluded that açaí helps prevent cardiovascular
diseases, such as heart attacks and strokes. The fruit also
5 has other benefits for our health: it helps the intestines
[5] work well and efficiently. It also delays the aging process
$\in$ cells. In addition to all these benefits, other studies
done recently ______ that the fruit is also good for
our sight and stimulates our memory.

(Adapted from www.maganews.com)

GLOSSARY
carried out — realizado
stroke — derrame

Fill $\in$ the blank with the correct verb tense: