【題組】15. Look at the four squares[■ ] that indicate where the following sentence can be added to the
問題詳情
【題組】
15. Look at the four squares[■ ] that indicate where the following sentence can be added to the passage. "This is a question thathas puzzled scientists for ages." Where would the sentence best fit? (A)1 (B)2 (C)3 (D)4