---Do you know about a very popular toy--- the yo-yo(悠悠球)?---Yes. Filipinos(菲律宾人) invented it ________ accident. And it ________ helping kill animals.
I feel sad. My grandfather’s leg is _______.
You can’t buy all the things _______your list.
—________ shorts are they? —They are my shorts.
— Your pencil case is nice. —__________.
—Paul , please take this CD to ______ English teacher . —OK .