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Attention: Questions 20 to 22 are about text 02.
Text 02
The role of instructional materials. Materials play an important role in TBI since examples of authentic spoken and written texts provide the basis for teaching and learning. Texts can be obtained from a variety of sources: from the real world (i.e., texts from everyday life such as forms, documents, reports), from the Internet, from the media (e.g., YouTube), or from students themselves, that is, from their work, study, and other non-pedagogical contexts. However, teachers may also prepare model texts (adapted from authentic texts) to highlight the discourse and language features of particular text-types. Student-generated texts (either spoken or written) are also used as a basis for assessing student learning. A text-based approach can also be used as the basis for designing textbooks.
Source: Richards, J.C.; Rodgers, T. S. Approaches and methods in language teaching. 3rd ed. 2014. p.207.
In text 02:
There is only one example of hyphenated adjectives.
There are three examples of the passive voice structure.
There is only one example of modal verb expressing “obligation”.
"Themselves" is a relative pronoun, referring back to the noun "students”.