[Q]: Would the following sentence, by the strictest standards, be considered correct? The boy thought she was happy.
++++++++++
[A]: acceptable

[Q]: Would the following sentence, by the strictest standards, be considered correct? John is eager to examine the patient.
++++++++++
[A]: acceptable

[Q]: Would the following sentence, by the strictest standards, be considered correct? John will enthusiastically have been eating cake.
++++++++++
[A]:
acceptable