Amy always helps the children in poor areas. She is kind and ____________.
-- I can't find David. Where is he? -- He ________ for tomorrow's competition at home.
Smile to the world, ________ the world will smile back to you.
-- ________ can you finish this English examination? -- In about one and a half hours.
-- Would you like some milk? --________.
You __ drive your car so fast. It's very dangerous.