it must be great to have信息详情
这一定很好
it must be───它必须是；一定是
must have to───一定要
be must───必须
be great to───很高兴见到你
to be great───很棒的
have to be───必定是，无疑是；<美口>肯定是…，毫无疑问是…
it great───太棒了
be great───太棒了
must to───必须到
As the majority people in school are teenagers, they are the future of our country and they don't have too much experience to escape from fire, so it must be a great injuries or deaths.───因为学校大多数人都是青少年，是祖国的未来，也没有多少火灾逃亡的经验，所以肯定会造成很大的伤亡。
It must be great to have an opportunity to attend their festivals.───如果有机会参加他们的节庆更好。
It seems to be a negative attitude, but a person who can do so must have foresight as well as a great courage in the first place.───这似乎是一种消极态度，但是一个能这样做的人，一定要再在一开始就具有先见之明和巨大的勇气。
It must be great to have an opportunity to attend their festivals.───如果有机会参加他们的节日才好呢。