英语作文mydream-anastronaut

I have a dream that oneday I will be an astronaut.As is known to all,being an astronaut is rewarding but which also requires strong body and courage.When I was very young,I keep
holding on to the dream of becoming an astronaut.And now I think I must stick to my wish
by all means,though there will be unexpected obstacles advancing to my target.From now on,it is obviously that I should study hard and try to do more physical exercise to make my body functioning well.In my opinion,only in this way can I realize my dream.