these are a apple 是不是一个句子

these are a apple 是不是一个句子 （）1.What are these?A.An apple tree These are an apple and a pear.还是This is an apple and a pear. Are these your apple?Yse,().A.those are B.these are C.they're D.they are What are those?- ______.A.They are apple trees B.Those are apple trees为什么不选B而是选A,这是语法规定还是习惯用法? Are those apple?No,[they these their] These are apple .改为否定句 Are these apple?的答语是什么 These are apple trees(改为单数句) These are( ) a.apples trees b.apple trees c.apples tree those are oranges these are eggs that is a apple This is a ruler 找出错的一句 单复数互换：1This is a pen.2.Are these oranges?3.What's that in English?4.Is this an apple?5.Are these pencils? These apple are red.变成疑问句加回答 Are these apple trees?（的否定答句） These apple are( smooth and hard)对括号部分提问 连词成句 apple,mother,for,are,these,his 麻烦回答一下1.is ( )a book?回答是No ( )is notA.this,this B.that,that C.it,this D.that,it2.What is this( )English?it is ( )egg.A.in/ B.to ,an C.in,an D.on,a3.What are those?( )apple.A,Those are B.these are C.They are4.How do you spell( )name? (1)This is a pen.(2)Are these oranges?（3）What's that in English?（4）Is this an apple?单复数互换还有一个 Are these pencils?