根据对话内容,选择合适的句子填空
Sam: Who are they,lingling?
Lingling: ____.
Sam: ____?
Lingling: It's my grandma.
Amy: ____.
Lingling: ____?
Amy: Did she learn any foreign languages?
某校举行“诚信之星”评选活动,你会给下列哪位同学投票 ( )
生成氧气的质量为多少克?固体残余物中含有什么物质?质量各为多少?