Open the brackets and use the verbs in Present, past or future perfect tenses

EXERCISE 1 Open the brackets and use the verbs in Present, past or future perfect tenses
1. He (to write) the letter by 5 o'clock.

2. He (to get) a big family.

3. I already (to do) my work.

4. I (to translate) this article by 3 o'clock.

6. I (to bring) this book by 3 o'clock yesterday

5. They never (to be) to England.

6. I just (to send) the letter.

7. Hе (to study) all the materials by the 1st of October.

8. We (to finish) our work by the end of the year.

9. She never (to read) this book.

7. The rain (to begin) before we arrived home I already (to meet) my sister.

8. The students (to pass) their exams by the end of June.

10. My brother went to Samarkand after he (to pass) his examinations.

11. My friend (to obtain) pure hydrogen.

12. She (to paint) the picture by tomorrow.

13. My friend (to obtain) pure hydrogen when I came up to him.

14. you (to take) all your exams by the end of January?

15. He (to go) to the institute by 8 o'clock.

16. They (to obtain) pure hydrogen by 5 o'clock.

17. We (to pass) our examination.