Is this a watch?（复数）

Is this a watch?（复数） Is this a watch?（改为复数句子） this is a watch(改为复数句) 把下列句子变成复数形式.This is a watch. This is her watch.[变复数】 Is that a watch?(怎么改为复数形式） It is a watch.(改为复数）清楚,明白 （单数句子变成复数） 1.This is a map.2.That's an orange orange.3.—What's this?—It's a watch. Is this a c（）?No,it is a watch. This is a marker.（变复数） This is a cinema.（改为复数） It is a watch.变为复数句 It is a watch.(改为复数形式) It is a watch.变成复数句 Father is having lunch in his factory(改为一般现在时） They watch TV every evening（改为一般将来时)There is a child in this room(改为复数形式） 把下列句子变为复数This is a watermlon.it is a yellow shirt.that's my watch. Is this a car?复数Is this a car?(变为复数） Yes,it is.（变为复数） This is a watch.Is it (you)?