--Excuse me, can I have this seat, please?--I’m sorry, but it’s_______.
-- I can't find David. Where is he? -- He ________ for tomorrow's competition at home.
You can take_______ of the two toy cars and leave the other for your brother.
-- ________ can you finish this book? -- In about an hour.
-- Would you like some milk? --________.
You __ drive your car so fast. It's very dangerous.