a) complete the following general questions to make them alterna- live. model: + busy? he busy | or free? 1. are they in the garden .2 2. is your sister at the institu- te …? 3. is doctor sandford at the hospital …? 4. is his wife in the park …? 5. is the exercise easy …? 6. is betty nineteen …? 7. is the hall big…? 8. are you free on saturday 9. are these lessons difficult …? 10. is this sentence long …? ​

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