Question

предложения в отрицательной форме 1) We have discussed the problem. 2) I have travelled a lot this year. 3) You have been there this week. 4) My friend has driven a car.

Answer 1

В первом будет haven't

Во втором haven't

В третьем haven't

В четвёртом hasn't

Объяснение: has/have + not