[Q]: Would the following sentence, by the strictest standards, be considered correct? Sam didn't pick those packages up which are to be mailed tomorrow until it had stopped raining.
++++++++++
[A]: acceptable

[Q]: Would the following sentence, by the strictest standards, be considered correct? The cottage which did Mrs Dashwood accept was rather small.
++++++++++
[A]: unacceptable

[Q]: Would the following sentence, by the strictest standards, be considered correct? What Mary did with Bill was sing a song.
++++++++++
[A]:
acceptable