I like sweet-and-sour pork ribs(糖醋排骨)_____ my mother cooks.A. that B. who C. what
--__________ ? -- I like tennis and football best.
--Do you know the woman __________ the red coat? --Sorry, I don’t know.
--Are there any trees __________ the house? -- No, there aren’t.
--__________ your new students? --Yes, __________.
-- Do you like playing __________ football? -- Yes, I want to be __________ good football player.