The key answer of exercise 2
The key to exercise solutions in chapter 2D - Present perfect simple and continuous for the textbook Solutions Intermediate - Workbook with authors Tim Falla and Paul A. Davies from Oxford University Press
Question
Complete the sentences with the present perfect continuous form of the verbs in brackets and for or since.
Answer
- 's been collecting; for
- Have you been learning; for
- haven't been feeling; since
- has been drinking; for
- hasn't been waiting; for
- 've been working; since