Please turn off the stove. The water ________ for more than fifteen minutes.

     A. is boiling               B. was boiling         C. has been boiling D. will be boiling

Look! Mary ________ a beautiful new dress. She ________ so pretty in the dress.

John ________ in France, but his parents ________ in Cologne, Germany after living there for five years.

- ________ free this afternoon?

     - No, I ________

     - What ________?

     - I ________ my dentist.

Do you think everything ________ when we ________ from the store?

He ________ a birthday party tomorrow for his daughter who ________ three.

Listen! Mr. Jones ________ the piano. You ________ noise.

Every day, John ________ rice and vegetables for lunch, but today he ________ chicken soup and roast beef. Today is his brother’s wedding.

John ________ a lot. In fact, when he ________ only two years old, he first ________ to the USA.

Mike ________ to sit down because he ________ all day at work.

At present Mary ________ her clothes. She ________ the clothes on Sundays.

We were late because we had some car problems. By the time we ________ to the train station, Susan ________ for us for more than two hours.

What ________ since 8 am up to now?

Jane ________ at my house when you ________

John ________ for his girlfriend for two hours but she ________ At last, he ________ to the movies without her.

By the time the boss ________ at 9.00, his employees ________ for two hours.