Questões de Concurso Público Prefeitura de Coronel Bicaco - RS 2019 para Professor Ensino Fundamental 6ª a 9ª séries - Inglês

Consider the following sentences:
I. In lines 06, ‘Do’ is used as an auxiliary verb from the simple present in order to make an interrogative sentence. II. In line 13, ‘Can’ is being incorrectly used, as the correct auxiliary verb to ‘write’ is ‘to do’. III. To make the sentence “they should think of an example of a book that fits into that particular genre” (l. 17-18) interrogative, it is necessary to add the auxiliary ‘do’ in the beginning of the sentence.
Which ones are correct?

If ‘and her friend’ was inserted after ‘Matilda’ in “If Matilda reads one book every week, what is the average number of books she reads in a month?” (l.12-13), how many other words would be necessary to change?

Consider the following changes proposed:
I. Replacement of ‘bring in’ (l.02) with ‘acquit’. II. Replacement of ‘slot’ (l.18) with ‘check’. III. Omission of ‘out’ (l.40).
Disregarding any grammatical aspects, which ones alter the meaning of the sentence?