What's this?A、It's key B、It's an key C、it's keys D、A key 应该选几

-What's this?-It's a-------. 改病句,It's orange in English. What's this?-This is改病句,It's orange in English.What's this?-This is a pen.Spell the word “jacket”, please.-J-a-c-k-e-t. what's this?it's a chair.怎么翻译. What's this?It's a pen.(改为复数句) what's this?it's a cat变为复数句 What`s this in E( ) It`s an a ( ) 选择题What's this?A.It's Z.B.It's red.C.This is ruler. 选择 What's this - ( )A A.It's B.It's an C.It's a D.This is What（ )this?It's( )apple What's this( )a photo?A.It's B.it's C.Its What's this it's bag.对么 What's this ( ) Chinese It's jiakeshan. It's coffee.__?It's milk.A.Who is this B.What's it.C.And what's mine D.And what's this 选哪个 what 's this with English?It's a pen a.what 's b.with c.It's 挑错并改正 what's this?It's V.为何不回答说it's a V呢? A:What's this?B:Oh.( )It'sA:What's this?B:Oh. ( )It's my pencil. Tom:Oh,what`s this?Alice:It`s a bike.Tom:It`s very nice.By the way.问：when is it now?Alice:Good afternoon,Tom.Tom:Good afternoon,Alice,Oh,what`s this?Alice:It`s a bike.Tom:It`s very nice.By the way,can you spell bike?Alice:Yes,it`s B-I-K-E,bike. It's cup —What's this?—This is a pen.—Spell the wordkey.—k-e-y.这些哪里错了呢?