uation er ght ess go sing 1. Exercise 2. Fill in the blanks using the past continuous tense. (enjoy) our vacation by the beach? 1. 2. The teacher 3. 4. 5. The teacher 6. The Sun 7. My mom 8. We 9. The dog. 10. The children we the fireflies the snow (explain) the lesson to the class. (glow) in the dark? (fall) softly from the sky? (not give) us any homework. (not shine) brightly today. (not enjoy) her coffee this morning. (run) faster than the wind. (chase) its tail in the backyard. (laugh) and playing together. Exercise 3. Change the following sentences into positive (+); negative (-) or interrogative (+) I was cooking dinner yesterday at this time. (-)