The student sitting next to me is from China.里的sitting是形容词么?sitting next to me 是adjective phrase么?

the student is sitting at his desk 为什么用at? The student sitting next to me is from China.里的sitting是形容词么?sitting next to me 是adjective phrase么? A teacher,with three student,__ in the office now.A.is sitting B.are talking Who is the student _____ was sitting over there.A,whom Bthat C,which,Dwhose Sitting over there was the student whothey thiyght_to speak at the opening ceremony.1selected2selecting3was selected4selectsHappy Valentine's Day! The boy sitting by the window is the only one student who ( ) from the country .A.is .were C.was D.are SITTING BY THE Sitting on the train sitting at the table the student the student the book( )the sitting room The student is sitting at his desk.这些学生是坐在他的办公旧.麻烦问下我翻译的对不. the student who____is best student Tom is in the sitting sitting the people sitting on the chair 英语语法,Mary,together with her children,_____some video show when I went into the sitting room为什么是was watching?The student checked his writing carefully lest it ———some spelling mistake.为什么是should have?