Choose the correct negative sentence in present perfect.

1.

i have not phoned the helpline yet.
i have not yet phoned the helpline.
i has not phoned the helpline yet.

2.

his mother has not made dinner so far.
his mother have not made dinner so far.
his mother has so far not made dinner.

3.
test-your-concepts.jpg
they has not learned the formulas, so they will probably fail the test.
they have not learned the formulas, so they will probably fail the test.
they have not learn the formulas, so they will probably fail the test.

4.

they have not use a touchscreen phone so far.
they have not used a touchscreen phone so far.
they has not used a touchscreen phone so far.