英文的Whats the biggest problem facing historiancs studying first nation history "pre-contact"?what are some strategies in dealing with this problems?

英文的Whats the biggest problem facing historiancs studying first nation history pre-contact?what are some strategies in dealing with this problems? whats with the mask 还有,能解释下whats with的意思吗? whats with the whats the fuck! whats the English for Whats the weather like? the biggest 求一篇用英文回答的What's the biggest problem in China? whats the biggest dreamer的中文名是什么? the biggest teen stars的意思 英语调查问卷,希望有兴趣的朋友积极参加,有分的1、what are the obstades that you were ever faced with?which is the biggest one?2、In which ways did you overcome them?whats the favourite way?3、how can we overcome some obstades in 英语调查问卷,希望有兴趣的朋友积极参加,有分的1、what are the obstades that you were ever faced with?which is the biggest one?2、In which ways did you overcome them?whats the favourite way?3、how can we overcome some obstades in Whats with the American terms? whats the meaning of love whats the meaning of motherfucker? whats the word genious definition? whats the mean of male