There______ a pen and two felt pens in the box.我选的是are,答案为什么是 is啊

There______ a pen and two felt pens in the box.我选的是are,答案为什么是 is啊 She has an () .选择：A.uncle B.oranges C.pen why is a fountain pen leak in an airplane? There is ( ) “P,( )“E”and ( )N in pen.(a/an) What's this?——___.(①It's a pen.②This is pen.③This is an pen.④It's a pen.) pass me a pen to write an article with正确还是pass me a pen to write an article正确 There______ a hat and tow balls on the table I have-----pen and ----eraser.1、a；a 2、a；an 3、an a Jack,come and _____ your brother here.A.teke B.bring C.watch D.spellHe has____.A.an orange pen B.orange an pen C.an orange pens D.an oranges pen第二个是不是选A it is an oranre pen为什么用an而不用a it is an oranre pen为什么用an而不用a There____a pen and an eraser This is an English pen There is a pen and an eraser in the box否定句和一般疑问句和a pen and an eraser 划线提问 This is a pen and that’s an eraser.可不可以写成This is a pen and that is an eraser.呢? This is ______ my pen.I'm writing with _____ pen.[     ] A.the,/ B./,the C.a,an D.an,/全试卷答案 Do you have __ pen?Yes.I have one.A.a B.an C.the D./ Do you have ___ pen?Yes,I have one.A.a B.an C.the D./