因为be动词是are.
说明空中的名词应该是复数,所以用pens.1.____those your parents?yes,they____.(be)2.this is____sister.(she) 3.my father s father ismy____.4.annais mr. and mrs.smith(还有个逗号，打不出来) sdaughter. sotheyareanna(有个逗号）____1.__Are__those your parents?yes,they__are__.(be)2.this is__her__sister.(she) 3.my father s father ismy____.4.annais mr. and mrs.smith(还有个逗号，打不出来) sdaughter. sotheyareanna(有个逗号）____后面的把问题打清楚好吧。是这样啊，那个在上面的逗号，我打不出来..........用enter左边那个键就可以。哦哦1.____those your parents?yes,they____.(be)2.this is____sister.(she) 3.my father s father ismy____.4.annais mr. and mrs.smith’s daughter. sotheyareanna’___1.__Are__those your parents?yes,they__are__.(be)2.this is__her__sister.(she) 3.my father s father ismy__grandfather__.4.annais mr. and mrs.smith’s daughter. sotheyareanna’_parents__1.dad,thisismr. wang.__He_is my teacher.2.I am in class 4.look,this is_my__class.3.the boy is joy,put__a_bag on the desk.4.luck,can you tell me where_the__cap is ?最后一个问题不对