Answer:
Explanation:
do. You need a present tense ( a simple verb at that)
Did is past
done is also past as in Done meaning completed after it was started a while ago.
to do is an infinitive. You need a simple present tense verb. To go where no man has gone before.
To do what no one has attempted before.
Answer:
C
Explanation:
Unlike D, If you replace "hoary" with "frosty" it doesn't make sense.
D the central idea. Because they are supporting details to the central idea of the text.