-Sorry for keeping you waiting.
-Never mind. I________ here only a few minutes.

Three fourths of the homework _________ today.

A great number of reporters _________ to London to report the 30^th Olympic Games.

---What ‘s the matter with you?
--- You _____ my heart.
- -- But I didn’t mean to hurt you.

---What’s wrong with you, Mr. Keller?
--- I’ve had a very bad headache for two days. At first, I ______ I caught a cold, but the medicine ______.

I wasn’t aware of this before, but recent research _____ that eating too much fat can contribute to heart disease.

Please don’t phone him between 1 and 3 p.m. tomorrow. He _____ a lecture then.

— Is there anything wrong, Bob? You look sad.
— Oh, nothing much. In fact, I ________ of my friends back home.

I would have gone to visit him in the hospital had it been at all possible, but I_______ fully occupied the whole of last week.

— When did Tom come to Qingdao？
— It was in July，2006 and he          a trip in China with his parents at that
time.