They are English watches.(改为单数形式）

They are English watches.(改为单数形式） they are English books.(改为单数形式) They are English cars.(改为单数形式) They are English books (5改为单数形式） They are English boys.(改为单数形式） They are some English girls改为单数形式是什么? They are English girls 改为单数形式 __ __English girls They are English Teachers（改为单数形式） ＿＿＿is＿＿ They're English books.改为单数形式 There are lots of nice watches in the shop.(改为单数形式）：（ ）in th They are English exercise-books.(改为单数句型） Are they English girls?改为单数.