Could you give the answer choices for the statments? To elaborate
Answer:
The cement mixers that made concrete were used by the builders.
I believe it means something along the lines of their reward.
<u>I would risk my life for my friends. </u>
<em>I agree with this statement, because I hold great value in my friend's lives. I could easily risk my own life for theirs in order to protect their well-being.</em>
No punctuation. For that sentence, you need to have a question mark (?) at the end of it, to signal the end of the sentence, and to show that it’s a question.