Alguém me ajuda pfvr?
Complete the sentences using the verbs in parentheses in the passive voice.
1. A lot of articles __ by researchers. (write - simple present)
2. This homework __ by ten. (must - finish)
3. The letter __ by e-mail. (can - send)
4. Our exercises __ by the teacher. (correct - simple past)
5. English __ here for a long time. (teach - present perfect)
6. The boxes __ on your table tomorrow. (put - future with will)
7. The documents __ by your father. (sign - past perfect)
8. All the subjects __ now. (discuss - present progressive)