Tom is hungry.Tom is full

Tom is hungry.Tom is full who is hungry?Tom is.疑问：为何不是Tom is hungry.who is hungry?Tom is.疑问：回答为何不是Tom is hungry,这里的回答应该是系表结构,系表结构的be 动词必须与表语一起构成谓语,那么表语为什么在此处省略? Tom is my friend. Is Tom in? what is tom Tom is good _____Chinese This is Tom speaking where is tom from . Tom is bored. Tom is an E________boy. _____answer is wrong.(Tom) Tom is( )brother. Tom is the first? is tom happy or Tom is( ).(canada) Is tom piaying with His name is (tom)tom提问 His name is Tom.对Tom提问