Tom went off to the EXPO Garden with his friends, _____ an exciting day of discovering the unique (
独特的) culture of each nation.

I regret _____ that I am unable to help you.

---Did the book give the information you need?
--- Yes. But _____ it, I had to read the entire book.

There is ____ Mr. Smith at the door who wants to speak to you.

After completing and signing it, please return the form to us in the envelope ________.

Mr. Reed made up his mind to devote all he had to ________ some schools for poor children.

________ at the party, I found Tina seated alone in the front row.

I have had my bike _______ , and I'm going to have somebody _______ my radio    tomorrow．

He was disappointed to find his suggestions ________.

---How do you respond when ________ whether your girlfriend or wife looks fat?
--- Never say what you think. She just wants some reassurance(肯定) from you that she’s attractive.