Answer:
My brother was writting the letter when my sister came in.
Explanation:
You might want to keep this little helpful tip in mind:
Passive voice: the object is being modified/done/etc. by the subject.
→ We can see how the letter is being written by the subject.
Active voice: the subject is the one doing/modifing/etc. the object.
→ We can see how the subject is writting the letter.
Hope it helped,
BiologiaMagister
Answer:
I think it's compound. Not sure.
Answer: I'm not going to write your whole essay for you, but some good reasons to use would be: A change in atmosphere, they can experience what life is like on a different planet, they can get a chance to learn more about mars or anything else about space, and they can compare and contrast how different mars is from earth along with make new memories on a different planet.
I think the answer is C, sorry if it's wrong