The key answer of exercise 10.2
The key to exercise solutions in chapter Unit 10 - Present perfect continuous and simple for the textbook English Grammar in Use with authors Raymond Murphy from Cambridge University Press
Question
Ask questions using the words in brackets. Use the present perfect simple (have/has done) or continuous (have/has been doing).
Answer
- How long have you been learning Arabic?
- Have you been waiting long?
- Have you caught any fish?
- How many people have you invited?
- How long have you been teaching?
- How many books have you written?; How long have you been writing books?
- How long have you been saving (money)?; How much money have you saved?
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