It’s high time that we _____ measures to stop selling polluted vegetables. 

The scientist __________ the experiment for half a year, but he _______ yet.

Mr. Lee, who        as a guide for over 10 years, is now a manager in a big travel agency.

In the school hall, where a meeting       , some students are busy preparing for it.

—Come on，Kitty.—Oh, good heavens! Both my legs are nearly to give out. I_______ for hours like a dog.

— Tony, are you listening to me?—Sorry, Sir. I ______ to figure out what you said just now.

Clare finally decided to leave the company she ____ for since she graduated from university.

To prepare for the Olympic Games in summer, London ____ its largest ever exercise to test the response of emergency services.

With the introduction of digital equipment, a growing audience_______ back to the cinema in the past years.

---It’s many years since I saw you last time. I _________ you at all. ---I wouldn’t have, either, if someone _________ you by the name.

The number of foreign students attending Chinese universities _____ rising steadily since 1997.

When I got there, the meeting _____ for ten minutes.

At this time next week we ___________ a football match against Class 9.

—I haven’t heard from Henry for a long time.—What do you suppose________ to him?

Every time she was in trouble, she went to him for help, as he said he ___ do anything for her.

—What a pity!—Yes, I ____ his not trying it, but in vain．

—Have you ever visited the Water Cube? —Yes. When I served as a volunteer in Beijing, I      it twice.

Where were you at lunch time? I ________ a seat for you in the dining hall.

A trend_______ that 3D films will become more popular ever since the film Avatar hit the market.

— How do you find the oil price now?— It _____ up all the time and no one knows when it will become stable.