The bridge__in service for a long time.(be)

The bridge__in service for a long time.(be) we freeze the fish.The fish will be fresh for a long time.(合 It took a long time for the work to be done. I want to be with you for a long time please don not be ()for a long time how can be happy for a long time We _________ (be) good friends for a long time We waited a long time for the train.为什么a long time前不加for啊 For a long time,or in a long time?What's the difference betw 英语按所给词填空1.500 years （ ）【be】a long time for us.2.The glasses "Darling!for a long long time love! we waited a long time for the bus