Analyze the following sentences according to vocabulary use. 1. The underline words in paragraph 1 from text 2 meaningful and purposeful, are, respectively noun suffixes. 2. The ( ‘ ) in constantly observes learners’ progress, provides feedback, is being used to form the possessive case of a plural noun. 3. In the sentence provides feedback, and adjusts activities according to their needs, the word their, refers to activities. 4. In the sentence ESL teachers promote not only language development but also learners’ confidence and autonomy, the not only / but also construction is used to connect two similar, grammatically equal parts of a sentence. Choose the alternative which presents all the correct sentences.