Exercise 5 Translate the expressions into Chinese or English. 1. make contact with the head office ______1_________ __________2_______________ 与警察失去了联系 strengthen economic contacts _______3________ ____________4_____________ 促进文化交往 2. be confident in oneself ______5________ __________6_______________ 对未来有信心 be confident of victory _____7_________ ___________8______________ 确信能成功 3. complain about the service ______9_______ ___________10_____________ 抱怨天气不好 4. appear friendly ____11________ _________12___________ 显得很自信