Problem: Produce a sentence that would be considered grammatically unacceptable (OPTIONS:
- unacceptable
- acceptable)

Answer: President Lincoln delivered her Gettysburg Address in 1863.

Problem: Produce a sentence that would be considered grammatically acceptable (OPTIONS:
- unacceptable
- acceptable)

Answer: What's actually happening in London at the moment is immensely exciting.

Problem: Produce a sentence that would be considered grammatically acceptable (OPTIONS:
- unacceptable
- acceptable)

Answer:
A lot of this material can be presented in a fairly informal and accessible fashion, and often I do.