--Hello, Sandy. This is Jack. What are you doing?---I’m watching a match. It started at 7:00 p.m. and _____ on for another an hour.
---What color_____ the cats? ---I think ________white and black.
-- Where are the_____?-- They are on the desk.
It’s _______black. It’s _____black car. A…./… B.a/… C…./a D.a/a
---Is this your basketball? --- ________.
This boy is my ________.