—It smells terrible. What has happened here?—Look, there is much waste gas _____ from the chemical factory.A.pour B.pouring D.pours
She is my______,my mother’s sister.
--Is this your brother? --No,______.
______are my sisters.A.This B.That C.She D These
______is Jane,and______is Tom.
--Are_____Mr.Miller? --Yes,_______am.