___(Is/Are ) these good news?到底要选哪一个,解释一下好吗?谢谢

Are these pens ___? These caps are ___? These clothes are on sale.同义句There is ___ _____ ____ these clothes Are these your ___(watch)? His ___ are workers.These are my parents and this is me. ---Are those your books?---Yes,___.A.it is B.th---Are those your books?---Yes,___.A.it is B.these are C.they are Today is Mary's birthday.These presents are ___ her.填介词 ___(Is/Are ) these good news?到底要选哪一个,解释一下好吗?谢谢 英语These books are very ___(cheap). ___ are these? 空格内只填一个单词. Are these your trousers?—Yes,___.A.it is B.they are C.they're D.it's 补全对话（英语）：如下：A:Hi,this is a photo of my ___.B:Oh!___ these your___?A:___.They are my grandparents.These are my ___.This is my father.___ name is Nick.And this is my___.Her name is Linda.B:So,is this your grandfather A:Yes,___ i Whose postcards are these?=Whose ___ ___ ___?=Who___ these postcards____ ____? 1.______?The ruler is blue.2 ___?Alice is from England.3.Is your father a doctor?___.4.___?The ball is under the desk.5.Happy birthday to you!_____?6.___?These are eggs. 这些鞋子的价格非常合理 These shoes are ___ ___ ___ ___ . These pants are yellow.改为一般疑问句___ ___ ___ ___? These are Gina's friends①___ ___ Gina's friends?②These ___ ___ Gina's friends these shoes are (the twins') 对括号内提问.___ ___ these shoes?