Defining Relative Clauses

There are 10 questions in this quiz.
Brief description
Complete the sentence (Question 1 - 4)
In which sentence can we delete who? (Question 5)
In which sentence can we delete that? (Question 6)
In which sentence can we NOT delete that? (Question 7)
Rewrite these sentences. (Question 8 - 9)
Which sentence does NOT need the word who? (Question 10)
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