Answer:
because teachers and other educational staff do not
Answer:
Concluding sentences are key to tying your argument together. One of the biggest mistakes that many otherwise excellent writers make is leaving concluding sentences out of their paragraphs and essays. The purpose of a concluding sentence is to summarize the argument you just made in your preceding paragraph.
Explanation:
The correct answer is "I can't believe he has <em>swum </em>to the island." Swum is the past principle of "swim." However, if you drop the word <em>has </em>the answer would be D and the sentence would appear much more grammatically appealing. :)