英语 变同义句Are these pens Lucy's?

英语 变同义句Are these pens Lucy's? These are my pens同义句 These pens _______ these are pens （变复数句) Are these your pens?（同义句转换） Are these ------------ --------- 1.Whose pens are these?改为同义句 Lucy‘s and Lily‘s birthdays are in August同义句转换怎么变? Give them these pens（同义句） these books are Tom's 同义句 Are these your pens 同意句 These pens are blue.(变否定句） Is that your photo?(变复数句） This is These books are my(f )变同义句 these pens are red怎样变特殊疑问句