Add the suffix "-er" to the words in the box. Then complete the sentences below with the words newly formed. 后缀 -er 加在某些动词、名词或形容词后表示"有......特征的人或物"、"在......工作或居住的人"、"以 ......为业的人"等意思。如 foreign+er → foreigner(外国人)、bank+er → banker(银行家)、 drive+er → driver(司机)。 请用以下单词的正确形式填空 print strange own work teach 1.When we came into the factory, our water pump was being repaired by an old_____________. 2.Unless you are the _____________ of a business, there is always a chance that you can be let go from work at any time. 3.The women knew nothing of the lonely girl. They were _____________. 4.Parents will be able to discuss their child’s progress with their _____________. 5.To print or preview a publication , at least one _____________ must be installed on the system.