Ubahlah kalimat berikut sesuai perintah dalam kurung 1. I have bought a new car. [Ubahlah menjadi bentuk present tense (-)] 2. My sister has started a new job this week. [ubahlah menjadi bentuk past tense (+)] 3. She has already submitted her paper. [ubahlah menjadi bentuk future tense (+)] 4. We have been to Singapore. [ubahlah menjadi bentuk past tense (-)] 5. Peter has gone to the bookstore. [ubahlah menjadi bentuk present continous tense (+)]6. There has been an accident near here. [ubahlah menjadi past perfect tense (-)]

7. My father has broken his leg. [ubahlah menjadi past future continous tense (+)]

8. My students have improved their English. [ubahlah menjadi past continous tense (+)]

9. They have had a newborn baby. [ubahlah menjadi future tense (-)]

10. My friends and I have worked hard this month. [ubahlah menjadi present continous tense (?)]

11. You had forgotten your lunch box. [ubahlah menjadi present perfect tense (-)]

12. A car has just stopped in front of me. [ubahlah menjadi future tense (?)

13. You are telling me about this story. [ubahlah menjadi present perfect (-)]

14. This is the first time she wrote a love letter. [ubahlah menjadi present perfect tense (+)]

15. The weather has been cold recently. [ubahlah menjadi past perfect tense​

Tolong bantuin jawabannya

1. I haven't bought a new car
2. my sister has started a new job this week
3. she will submit her paper