---How many elephants are there in the zoo?--- There aren’t _______.

---Do you like fast food?  ---No, I don’t. I _______ go to McDonald. 

— _________ has Liu Xiang taken part in world’s competitions of 110-metre hurdles?— I’ve no idea. Let’s find it out on the Internet.

----Why do you speak in _________ a loud voice?----Because I want to make myself ________ clearly. 

--_______ does she chat with friends on the Internet? --Once a week.