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Answer: If it is internal dialogue (your thoughts) yes.
Explanation:
You can, in general. Each instructor may rely on her own preference, but there is no standing rule against using italics, and I think it helps the reader separate or differentiate between past and present. For external dialogue use quotation marks, for internal, use italics.
Answer: She is not confident the discovery will be very helpful to others
Explanation:
When you are going through a challenge you must remember to strive for the reward and keep going
Answer:
HI
Explanation:
It's a animal walking a cross a big drop that could make her fall.
Hope this helps