How do you learn English so well —_______ chatting with my uncle in the USA.

依次填入下列各句横线处的成语，最恰当的一组是(　　)①军人必须以________的紧迫感去练兵习武，否则，打赢未来战争就是一句空话。②面对网络购物快速崛起带来的巨大冲击，传统零售企业电商化转型________。③在用水量迅猛增长的同时，我国的水资源却在急剧减少，水资源危机________。

Bob, ________ is my brother Frank.—Nice to meet you, Frank.

He was looking for his gloves all morning , which turned up_________ under the sofa

Therewillbeastampshowinthemuseum______wevisitedlastweek.