Answer:
C. have been walking
Explanation:
A is talking in past tense and B also has a past tense vibe.
Answer: You have no problem speaking in the presence of large groups and you do this every weekend. You are very comfortable with it, but in class, you panic because OF THE ANXIETY PROVOKED BY THE CONTEXT OF YOUR SPEECH.
Explanation: Even though they might be the same audience, the platform has changed now, and may cause serious panicking.
A. <span><span>I'd love to stay and talk, but—yikes! I'm really late now.
</span>This is the correct answer. The dash here is used properly because it shows the break in thought, and it changes the tone of the speaker. That is one use of dashes.
<span>
B. </span></span><span>Today we studied a poem, did an experiment, and multiplied fractions. (The sentence doesn't need the dash.)
C. </span><span>The coat—one of the most colorful that I've seen--seemed to be made of string. (It needs another dash after seen.)
</span>D. <span>There on the stage was my sister! (Does not need the dash.)</span><span>
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