9.（ ）

(单选题)They have already been in Beijing ______ 10 years. (单选题)She had done ______ to improve her English, but she still fa (单选题)A: How can I speak English ______ you?B: You’d better practi (单选题)China has a ______ population and long history. (单选题)The light is still on. I forget ______. (单选题)A: Would you like juice or tea? B: ______, thank you very mu (单选题)It’s ______ hot today, but they have still finished ______ w (单选题)This story makes me ______ sad. (单选题)This pair of shoes ______ my brother’s. It’s too small for h (单选题)They have been to Beijing ______.