Those are ——A apple trees B apples trees

Those are ——A apple trees B apples trees 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] what are those that're Apple Are these your apple?Yse,().A.those are B.these are C.they're D.they are Are those ( A apple tree B apples tree C apples trees我认为是c those are oranges these are eggs that is a apple This is a ruler 找出错的一句 What are those?___A.they are apple trees B.they are apples trose are apples c.those are apple trees答案是A不过为啥不能选C呢 this is （ ）apple.those are（ ）.A.a,banana B.an ,banana C.an,banana D.a,bananas —Are those her parents?—_____.A.Yes,those are B.No,those aren't C.Yes,they are D.No,these aren't Are those apple?这句话有什么错? ——Are those pears?——____________.A.Yes,those areB.No,they aren'tC.these are not pears 句子选择What are these?——（ ）A:They are cabbages. B:Those are cabbages. 句型转换：Those are apples(单数句)(句型转换：Those are apples(单数句)( )apple. .刚才BUG了 (25日 21:14:12)-What are those -They are apple trees.提问是用 those ,为什么回答不用 those are 而用 they  are?——————————————When dose he have breakfast 为什么不能用When did ..句子前 Are these your pens?—No,not_____.A.those ones B.those C.these ones D.ones ——What are these?—— A.It is a bus.B.Those are buses.C.They are buses. Are you against a free apple?