Ⅰ．根据句意及首字母提示，完成句子
【小题1】Close your eyes and i________ you are in a forest.
【小题2】The sun has eight p________.
【小题3】The supermarket is very c___________ at weekends.
【小题4】We can’t swim here because the water is very p________.
【小题5】The j________ to the seaside will take two days.
【小题6】The car runs at a s________ of 50 kilometers an hour.
【小题7】We can’t breathe in space because there is no o________.
【小题8】They were the first Chinese s________ in that country.
【小题9】An astronaut can f__________ in outer space because of the absence (缺乏) of g_________.