Ответ:

i have been going to a language school near the library

have you been watching his video blogs

yes i have been watching them since of beginning

who has been teaching her

a family teacher has been teaching her

how long have they been see each other

they have been seeing each other for two months

Объяснение:

PPC используется для действий который начались продолжаются сейчас и еще будут продолжаться неизвестно сколько