根据所给汉语及首字母提示填空 1. John is one of the most wonderful p_____(飞行员). 2. This old teacher has many good teaching s_____(经验). 3. F_____(消防员) are those men who can quickly put out fires. 4. Yang Liwei is an excellent a_____(宇航员). 5. The e_____(雇主) wants to find good employees.