Life on earth is not going to be impossible, but it will have to

Life on earth is not going to be impossible, but it will have to be ______ in far favorable circumstances.
A、carried away
B、carried on
C、carried out
D、carried to
【正确答案】：B
【题目解析】：尽管在这世上生命不可能一直存在，但是生命会在这种良好的条件下延续下去。 carry away 使失去控制 carry on 继续 carry out 发现 carry to 运送至。故选B。