Ex. 16. (a, b) open the brackets. use the past continuous, the past indefinite, the present perfect or the present perfect continuous. 1. i'm so glad you (come). we (wait) for hours. 2. margaret, you (read) my letters. don't deny it. 3. show me the map. you (find) where we are? 4. when you (discuss) it? i never (hear) the subject mentioned. 5. no, you can't have another ice-cream. you (have) two already. 6. why, you (not/change) at all. i (recognise) you the moment i (see) you. 7. mother (go) to bed already? 8. when you (go) to bed? 9. i (hear) that some flowers grow better in shady places. 10. my dear girl, you (overeat) for years. you (lose) your looks, you (lose) your figure. you can't get back to normal overnight. remember what doctor lecter (tell) you on monday. 11. look! she (write) something on the fly-leaf of the book. 12. he (not/ say) a single word to me yet and he (get) that letter on sunday. 13. the children (talk) of nothing else for weeks. 14. and we ork) together ever since that time. 15. i wonder what (happen) there since we (leave) ? (