Questões de Concurso Sobre passado perfeito | past perfect em inglês

Analyze the following sentences below about the excerpt “It has been two months since I started this work-from-home part-time arrangement”.
I. The structure “it has been two months” is in the past perfect tense. II. The structure used suggests an ongoing action – the author is still working this way. III. The word “since” is connected to the point in the past in which the action started.
Which ones are correct?

The past simple and past participle of the verb “to become” are, respectively,

Use the simple past tense, the present perfect tense or the past perfect tense to complete the sentences.
I. The educators ______ (to teach) through the Paulo Freire Method.
II. Previously the students ______ (to learn) through an old and non-dynamic method, then the educators searched and found Freire’s method.
III. Firstly they had had long hours of boring studies when a group of educators ______ (to get) in touch with The Method Paulo Freire, everything changed. 

Mark the alternative that presents the Past Participle of the verbs below:

call – break – go - know

Check the alternative that presents the tense of the sentence below:

“Pamela went to Paris last year.”