--- Who is Tony going to the beach with?
--- ________.
--Do you still have a headache, Billy?
--No. it’s ________. I’m all right now, Mum.
“________ does your mother usually go to work?”
“By bike.”
-What's your shirt made of?
-________.
-What did you ________ yesterday?
-I ________ some books.
--I'm sorry for being late. I wanted to be here earlier, but the traffic was too heavy.
--________.
---How many times _______ you _______ to Beijing this year?
---Three times.
-________ has this food store been in business?
-Since 2001.