compare with life on earth ,life on Mars will be better in many ways meals on Mars will probably in the form of pills every students will have a computer at home connect to an inter-planetary networkscientists will develop plants can grow on Mars

1、Compare 改为Comparing
2、will 后面加be
3、student改为student，不加s，因为前面的Every
4、在can前面加which，定语从句
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we compare life on Earth with that on Mars

【Compared】 with life on Earth,life on Mars will be better in many ways.
Meals will probably be in the form of pills.
Every 【student】 will have a computer at home  connected to inter-planetary network.
scientists will develop plants 【that】can grow on Mars

1.compare 改为 comparing
2.在will和probably之间加 be
3.students 改为单数 student
4.在can 前加 which