填入适当的词使短文意思完整
People have looked at the moon and 76 poems for thousands of years,but nobody expected to go there _77 1961 when Yuri Gagarin made the first manned space flight.Then the Americans decided to send a man to the moon. Apollo 11 took off on 16 July.The journey 78 four days.On 21 July Neil Armstrong _79 the first man to walk on the moon.There were six manned missions to the moon between 1969 and 1972.We’ve learnt a lot about the moon. Nothing has _80 lived on the moon. Life on the moon won’t be easy. It will be difficult and dangerous.
76 77 78 79 80 written
网友回答
(答案→)written
解析：
【小题1】本题需要的是动词_又根据poems，可知答案为written
【小题2】not ···until表示直到···才，故选until
【小题3】took在本句的意思为花费的意思。
【小题4】became表示成为的意思，符合题意。
【小题5】ever,用在现在完成时，表示曾经的意思。