Выполним задание, используя Present Perfect или Present Perfect Continuous.
A: Have you seen dad?
B: Yes, he's in the garage. He has been trying to repair the car for over an hour.
A: I have known Ann for three years now.
B: Has she been studying with you for that long?
A: Bob has lost a lot of weight!
B: Yes, he hasn't been eating properly lately.
A: Have you been cleaning all morning?
B: No. I have just started.
a. What tense is used in each sentence? Why?
Ответ: смотри решение выше