Exercise 1. Составьте предложения в the Present Perfect Continuous Tense.
I/to read/this book/for three days.
We/to play volleyball/ for twenty minutes.
She/to clean/the flat/for more than an hour.
Peter/to swim/for half an hour.
Anna/to speak/on the phone/for an hour now.
You/to wait/for a bus/for ten minutes only.
Nelly and Mary/to do the shopping/since early morning.
It/to snow/since last night.
Jack and his friend/ to ride bikes/for three hours now.
The teacher/to explain/ a grammar rule/since the beginning of the lesson.