EXERCISE 13: Complete the sentences. Use the words in parentheses. Use the SIMPLE PRESENT TENSE. Pay special attention to singular and plural, to spelling, and to pronunciation of final -s/-es. 1. The students (ask, often) often ask 2. Pablo (study, usually) usually Studies evening. 3. Olga (bite) 4. Don (cash). 5. Sometimes I (worry) Sonya (worry, never). She (study). 6. Ms. Jones and Mr. Anderson (teach) school. Ms. Jones (teach) 7. Birds (fly). 8. A bird (fly). 9. Jason (do, always). (ao nararl hard. questions in class. her fingernails when she is nervous. a check at the bank once a week. They (have) It (have) at the library every about my grades at school. math. about her grades. at the local high wings. wings. his homework. He 19 bed until his homework is finished.