句型转换。 1. My father had a headache yesterday. (改为同义句) My father______ a pain ______ his head.   My father's head ______ yesterday. 2. Carla offered me a cup of tea. (改为同义句) Carla offercd a cup of tea ______. 3. Rick is very friendly to his friends, and they are very friendly to him, too. (改为同义句) Rick ______  ______  ______ with his friends. 4. I'll fly to Paris if I have a lot of money.(改为虚拟语气) I ______   ______ to Paris if I ______ a lot of money. 5. They want to go to the park instead of staying at home.  (改为同义句) They'd ______ go to the park ______ stay at home.