---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.
--Why do you want to stay at home? --Because I ________ good when I am with my family.
______ is dangerous for children to swim in the river alone.
Be more careful and we can ______ these accidents.
The mother did all kinds of things to make her baby ______.
–Did you water the flowers yourself? --No, I got them ______.