改单数句子They are English books.(改为单数句)It ＿ ＿ English book.横线内各填一个单词

改成单数句子怎么改Are they Japanese buses? they are some apples 改单数：---------- ------------- --------------- they are good friends 改单数句 they are my friends改单数句 they are offices.怎样改单数句 Are they birds?改单数句 What are they?They are buses改位单数形式 They are knives(改一般疑问句并用否定回答.改原句单数句子） 改单数句子They are English books.(改为单数句)It ＿ ＿ English book.横线内各填一个单词 they are on sofa 改成单数句子 They are bananas怎么变为单数句子 Are their jackets green?Yes,they are.(改单数）Are their jackets grssn?Yes ,they are .(改单数） 你好、Are they student 改为单数句怎么改? They are some good dictionaries.改为单数句怎么改 把they are boxes.改为单数句怎么改 They are my old friends.(改单数句）______________________________. They are waitresses.(改单数句) ____ is a waitresses. They are orange schoolbag改为单数句,怎么改啊!