根据《民事诉讼法》的规定，人民法院在必要时可以委托外地人民法院调查，受委托人民法院收到委托书后，应当在（ ）内完成调查。
A、五日C
《民事诉讼法》第131条规定，人民法院在必要时可以委托外地人民法院调查。委托调查，必须提出明确的项目和要求。受委托人民法院可以主动补充调查。受委托人民法院收到委托书后，应当在30日内完成调查，因故不能完成的，应当在上述期限内函告委托人民法院。因此，本题选C选项。
改写病句：One of Jenny ’greatest s joys in life is eating desserts. Such as milkshake, cookies or strawberry cake.
英语翻译：Vatican
句子写作：My presentation seemed to go well.
During the Second World War, Roosevelt, Stalin and Churchill met at ________.
One of the responsibilities of the Coast Guard is to make sure that all ships______followtraffic rules in busy harbors.
