Londoners still find it strange /find out it strange that fo

Londoners still find it strange /find out it strange that fog hardly returns.
应该选 find it strange,这个的意思是说伦敦人觉得...很奇怪.而find out的意思则是发现,不符句子想要表达的意思.
The decisive steps that have turned London into one of the cleanest cities in the world（was/were）taken at the end of the 1950s.
选 were,因为 “The decisive steps”才是这句话的主语,steps是复数,所以应选 were.中间夹的那一句只是来形容 “the decisive steps”(决定性的步骤).