就括号里提问.These books are (theirs)

就括号里提问.These books are (theirs) these lunch boxes are (theirs).括号里的theirs划线提问. These exercise -books are ( ).括号是填their还是theirs? these are my (books)对括号提问 these books are theirs.同义句 These books are theirs. 的同义句 These cats are theirs.(对theirs提问） Are these ---- a.yours books b.books theirs These books are (mine).(对括号内提问） These are [Tom's] books.[对括号内提问] These Chinese books are theirs.的同意句 these english books are theirs.改为同义句