The article is too long and should be ______ by half .
--Are you going to take part in the speech contest?---__________It's too good an opportunity to miss.
--- Would you mind not littering in the classroom? --- ______. I’ll pick up the waste paper.
The film Harry Potter Ⅳ is ______ for children above 12 and adults, for it contains horror and violence.
A turning point of the continuously high housing price won’t appear suddenly because there must be a certain process ______ many factors lead to the change.
---Did Zhou Libo say anything that ______ you in Mr. Zhou Live Show? ---Not really. Actually I slept through his performance.