There isn’t in this book, so ．is interested in it.

I’d appreciate _______ if you could let me know in advance whether you will come or not.

The new law states that people _________ drive after drinking alcohol.

I saw him in the library yesterday. He______ a book at that moment.

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.