I often take part in my school's activities.
我經(jīng)常參加學(xué)校的活動(dòng)
What‘s your favorite activity?
My favorite activity is swimming.
你最喜愛(ài)的活動(dòng)是什么?
我最喜愛(ài)的活動(dòng)是游泳.
The oceans froze over when geologic activity died out.
這些海洋在地震活躍帶消失時(shí)也會(huì)凍結(jié).
Whether this translates into real activity remains a question-mark.
它能不能轉(zhuǎn)化為實(shí)際行動(dòng)還不好說(shuō).
后兩句較難.希望可以采納.