Halloween 2014 | yes/no questions

1.) Saying: Let sleeping dogs lie.
Do you know what it means?  Answer the question:
https://www.englishclub.com/ref/esl/Sayings/Quizzes/Mixed_4/Let_sleeping_dogs_lie_545.htm

2.) Read a short story about Halloween.  Do the exercise links at the bottom of the page:
http://www.rong-chang.com/ne/es/es077.htm

3.) Practice making questions that have the answers “yes” or “no”
Yes/No question formation:  http://www.eslfast.com/writing/yes_no_questions01.htm