【正文】
ars. I think life on Mars will be better than (4) (those) on earth in many ways. People will have more space. Robot will do most of work, so people will have more time for (5) (hobby). What’s more, there will be no school on Mars. Every student will have a puter at home. They can study, do their homework and take exams online. 參考答案: Ⅰ. 1. has gone to 2. have。 外研八下 Module3Unit3同步練習(xí) Ⅰ. 用 just, already, yet, have been to或 have gone