that, which, who, is, are, have been The boy and the dog ____ a

that, which, who, is, are, have been
The boy and the dog ____ are in the picture ____ very lovely.
【正确答案】：that;are
【题目解析】：【考点点击】本题考查关系代词和主谓一致。【要点透析】当先行词有两个且一个指人一个指物时,关系代词应该用that。第二个空由题意可知,缺少一个be动词,该句的主语是 the boy and the dog,因此谓语动词用复数形式。