Today we'll let a member of the class lead the discussion. It will be a good educational experience.
(I stayed out too late last night and didn't have time to prepare a lecture.)
The gist of what the author is saying is what's most important.
(I don't understand the details either.)
The test scores were generally good.
(Some of you managed a 'C'.)
Some of you could have done better.
It's been very rewarding to teach this class.
(I hope they find someone else to teach it next year.)
The teacher was describing the dolphin and its habits.
"And, children, "she said impressively, "a single dolphin will have two thousand offspring."
"Goodness!" gasped a little girl in the back row. "And how about married ones?"