Answer:
complex (dependent clause + independent clause) :
Although the dentist did not find anything wrong, Sue's mouth still hurt.
compound-complex (dependent + independent + independent) :
Although the dentist found nothing wrong with Sue's teeth, she still had a toothache, so she went to bed.
compound (independent + independent) :
The dentist did not find anything wrong with her teeth, but Sue continues to have a toothache.
simple sentence (a single independent clause):
The dentist did not find anything wrong with Sue's teeth.
"DO NOT ANSWER BASED ON THE OTHER EXACT QUESTIONS, THEY HAVE BAD RATINGS."
You can be 100% confident of my answer. I don't rely on other peoples' responses, nor do I answer questions unless I'm fully qualified as an expert on the subject matter. :-)
Step-by-step explanation: