英语翻译题求助,时态问题
沉船事故发生后,地方官员一直在考虑应该采取什么措施来防止这各事故
After the shipwreck , the local officials are thinking what measures should be taken to prevent such kinds of accidents.
还是 After the shipwreck , the local officials have been thinking what measures should be taken to prevent such kinds of accidents.
该用哪种时态?谢谢