образуйте the Present Perfect Continuous Tense. 3. She _____ (wait) for the taxi for 30 minutes. 4. He _____ (walk) his dog for 30 minutes.

Ответ:

3. She has been waiting for the taxi for 30 minutes.

4. He has been walking his dog for 30 minutes.

Правило образования: have (has) + вспомогательный главгол "to be" в третьей форме (been) + смысловой главгол с окончанием "ing"