Question

PRESENT PERFECT TENSE
Me ajudem pfv

Answer 1

1. have crashed

2. has been

3. have tried

4. has sent

5. has studied

6. have broken

7. have gone

8. has written

9. have helped

10. have forgotten

1. has the researcher sent...

The researcher hasn't sent...

2. Have they found...

They haven't found...

3. Has he been to...

He hasn't been to...

4. Have the Johnsons tried..

The Johnsons haven't tried...

5. Has Ann solved...

Ann hasn't solved...