Answer keys for excise 1 on page 40:1. fit in 2. adjusting/getting used to3. numb4. get used to5. in common6. keep it up7. numb8. at home9. all the best10. far as I concerned2. Complete the sentences with the suitable words in their proper forms.1. Sara ____________ ( acknowledged, acknowledgement ) her mistake and apologized immediately.2. The travel agency booked my flight and ______________ (accommodate, accommodation ) for me.3. He has a good __________ (relation, relationship) wi..