[Q]: Would the following sentence, by the strictest standards, be considered correct? The CDs were given to the boys by John.
++++++++++
[A]: acceptable

[Q]: Would the following sentence, by the strictest standards, be considered correct? Owners of a pig love to eat truffles.
++++++++++
[A]: acceptable

[Q]: Would the following sentence, by the strictest standards, be considered correct? John thinks Mary left.
++++++++++
[A]:
acceptable