还得麻烦你了 I hope scientists _____（find)a cure for cancer

题目

还得麻烦你了 I hope scientists _____（find)a cure for cancer
By the middle of this century ,more people _____(live)in cities than in the country
Ten years from now,people ______(wear)smart clothes
No one_______ever_______(live)on Mars
Humans ________(live）on another plants five billion years from now
A chinese astronaut ______(reach)Mars by 2050

答案

I hope scientists (could )find（find)a cure for cancer
By the middle of this century ,more people will have lived (live)in cities than in the country
Ten years from now,people _have wore (wear)smart clothes
No one has ever_lived (live)on Mars
Humans will live (live）on another plants five billion years from now
A chinese astronaut will reach(reach)Mars by 2050