34. Birds (build) ___________________their nests in summer and (fly)___________ to the South in winter. 38. How long (Bob and Mary /be)____________________ married? 39. (You /receive) ____________________any letter from your parents yet? 48. my brother(finish)_________________ his second novel so far. 63. She is buying a lot of flour, I think she (make)_______________some cakes. 66. Some animals (not eat)___________________ during winter. 67. He drives too dangerously, he (have)_______________________an accident. 68. John (watch) ______________TV at 8 last evening.

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