Answer — Exercise 3
3.9 - Self-check·Wider World 4 - Workbook
Question
Complete the sentences with the Present Perfect Continuous form of the verbs in brackets. Then write for, since or all.
Answer
- have been working; since
- has been studying; since
- has been running; all
- haven't been waiting; for
- have been making; for
- hasn't been writing; since