茜拉在那遥远的地方:“What has become of the goat?这个句子中谁是主语？ OF 在这里是什么用途．．．．．．．．．

“Are you out of your senses?” said his mother. “What has become of the goat?” What first seemed like a luxury has become a form of escape. what had become of 是什么意思? What were your problems ten years ago__ become mine.是填have还是 has?请高手告知.Thousanda of thanks 请翻中: what is to become of you? “What has become of the goat?这个句子中谁是主语？ OF 在这里是什么用途．．．．．．．．． what kind of dog has no tail 动脑筋（what kind of room has----） This situation has become a focus of public interest.的interest要加复数吗？ Today dance has become a ____ means of entertainment among young people in China.