Is this a banana.(一般疑问句）

Is this a banana.(一般疑问句） this is a banana tree_________(变成复数) This is a banana and that is an this is （ ）apple.those are（ ）.A.a,banana B.an ,banana C.an,banana D.a,bananas she is eating banana改一般疑问句 lucy is a good banana bananais a c noun This is an orangge in English.in english.对an orange提问2.That is banana.对banana提问3.It is a key?对a key提问 Is this _____?No,it isn't.a.orange.b.a kite c.cat d.banana i ate a banana 改为一般疑问句 It is a banana的否定句 This is a desk.(改为一般疑问句) This is a desk.(一般疑问句） This is a phone改成一般疑问句 This is a ruler 改为一般疑问句 this is a pencil 改为一般疑问句 This is a computer.(改为一般疑问句) This is a book变成一般疑问句