根據(jù)I欄的問句在II欄中選擇恰當(dāng)?shù)拇鹫Z。
                        Ⅰ
(     )1. Where have you been?
(     )2. What happened to your brother?
(     )3. What is the population of the U.S.A.?
(     )4. How long have you been like this?
(     )5. Do you want to be a greener person?


A. So do I.
B. Yes, I'd love to.
C. Since last week.
D. He had an accident.                                                 
E. About 296 million.
F. Once a month.
G. I've been to the library.
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