—Kathy and her sister are so alike.—I can’t tell one from ____.
—Have you got any books on English grammar?I'd like to borrow ________.—Yes,here you are.But you must return it by Friday.
Tom's mother kept telling him that he should work harder,but ________ didn't help.
Being more realistic,the elderly have learned to focus on things that make them happy and let go of ________ that don't.
John has always wanted an ipad and he has just saved enough money to buy ________.
I asked for some more cake,but there was ________ left.