Question

11. Helen (be) 17 years old next Sunday. 12. She told me she (invite) all her friends to her next birthday party. 13. Tom (arrive)? - Not yet. 14. When Sarah came to the party, Paul already (go) home. 15. You (see) news on television yesterday, didn't you? 16. She didn't tell (somebody, anybody) about her plans. 17. Do you read (many, much)? 18. She paid for her ticket and (leave). 19. I couldn't open the office door because someone (lock) it. 20. When I phoned her, she (do) her homework.

Answer 1

 Helen (is) 17 years old next Sunday.
12. She told me she (will inviting) all her friends to her next birthday party.
13. Are Tom (arrived)? - Not yet.
14. When Sarah came to the party, Paul already (went) home.
15. You (saw) news on television yesterday, didn't you?
16. She didn't tell (anybody) about her plans.
17. Do you read (much)?
18. She paid for her ticket and (leaved).
19. I couldn't open the office door because someone (locked) it.
20. When I phoned her, she (done) her homework

Answer 2

11. Helen will be 17 years old next Sunday. 12. She told me she is going to invite all her friends to her next birthday party. 13. Tom has not arrived yet. 14. When Sarah came to the party, Paul had already gone home. 15. You saw the news on television yesterday, didn't you? 16. She didn't tell anybody about her plans. 17. Do you read much? 18. She paid for her ticket and left. 19. I couldn't open the office door because someone had locked it. 20. When I phoned her, she was doing her homework.