These apple trees y____plenty of fruit this year

These are apple trees(改为单数句) Are these apple trees?（的否定答句） These apple trees y____plenty of fruit this year These are( ) a.apples trees b.apple trees c.apples tree apple trees还是apples trees? These trees are 什么 high Those are ——A apple trees B apples trees 苹果树翻译起来是apple trees.为什么不是apples trees? There are two farmers ( ) the apple trees They aren'r apple trees改单数 Look,there're 后为什么填apple Look,there're 后为什么填apple trees而不是apples trees或者是an apple tree 请回答时详细说下语法 还有个就是After ten yeas,all these youngsters became后有4个选择题A.growns-ups B.growns-up Are those_______big?A:apple trees B:apples treec:apples trees d:apple tree选哪个?理由? There were apple trees,orange trees and pear trees.(改为否定句) the trees 和these trees有什么区别? Look,there're 后为什么填apple trees而不是apples trees或者是an apple tree 请回答时详细说下语法 还有个就是After ten yeas,all these youngsters became后有4个选择题A.growns-ups B.growns-up C.grown-up D.grown-ups 我不明 求These are trees的中文, Are those apple?No,[they these their] These are apple .改为否定句