"Would you tell me what has become of the boy."
(あの子はどうなりましたか？)
解説
直接的疑問文を間接的疑問文にするには "May I ask / I wonder if" のほかに、"Would you tell me / Would you know / Could I ask you" などの形があります。例えば、（1）"What has become of the boy?"（あの子はどうなりましたか？）なら（2）"Would you tell me what has become of the boy." （3）"Would you know what has become of the boy."とします。（4）"What is the best time?"なら（5）"Would you know what is the best time?" （6）"Could I ask you what is the best time."です。（7）"What's in it?"（何がはいってるの？）なら （8）"Could you tell me what's in it?"となります。
