把这两个句子分别合并成一个含有宾语从句的复合句1.Whose is it? Canyou tell

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1.Could you tell me where your mother is? 2.Did she tell you his smile changed her life？ 3.I don't know which team will win the game? 4.Can you ask when the concert will begin? 5.Do you Know whether Sally has arrived at the classroom or not? 6.I asked Lucy if she can make friends with me?