not choose to have their holiday on other planets because it will
1. People
be very expensive.
A. won't
2.
A. Will
3. It
A. should
4. People
A. won't
5. Fumeless cars
A. will
B. might
C) should
we be able to inhabit Mars? Nobody knows for sure.
B. Should
C. Might
take a long time for t ...
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