They feel scared.(改为单数句)

they are orange sweaters 改为单数句 They are American teachers(改为单数句) Are they women doctors? 改为单数句 They are my friends.改为单数句 They are old jeeps. (改为单数句) 把They are apples.改为单数句 Are they students?（改为单数句） They are English jeeps.改为单数句 they are eggs改为单数句 they are orange schoolbags改为单数句 Do they have oranges?改为单数句 They‘re eggs 改为单数句