He couldn’t remember when he first listened to Obama’s speech, but he was sure it was ________ Monday because everybody was at ________ work.
--It’s reported that scientists have ________ an effective way to deal with H1N1. --Really? That’s great!
---- Did you have ________ fun at the party? ---- Yes. It’s ________ shame that you missed it.
It was my sister first had the idea to cycle along the entire Mekong River from ______ it began to where it ends.
In fifteen terrible seconds a large city .
---My family usually goes skating for vacation. I like skating, but I want to try something different this year. ----_______.