My MP4 player isn’t in my bag. Where        I have put it?

(2013·高考浙江卷)I ________ myself more－it was a perfect day.

（2014年北京市西城区高三5月二模试题）28. It was unusual that such close neighbors ______ not know one another. 

It’ s suggested by experts that teenagers ____at least 30 minutes exercising, five times a week.

They have promised the money collected        be handed to the charity house.