— I'm leaving tomorrow.— Oh, what a pity! I won't be able to see you off. I __ a tele-conference the whole morning.

It is said that they __ $ 200, 000 for the house up to now.

— I'll come to listen to your speech at 9:30 tomorrow morning.— I regret to tell you that by then my speech ____.

Nobody but a few little boys ___ in the garden now.

―Hello！May I speak to Jack, please?  ―Yes, speaking. －Oh, I _______ your voice at first.

Although many measures _____, the world’s economy is still going down.

A red light will start continuously flashing when the batteries____ low.

I called Hannah three times yesterday evening, but I couldn’t get through, her brother _______on the phone all the time.

—We’ve spent too much money recently.—Well, it isn’t surprising, Our friends and relatives_______ around all the time.

Space exploration began in the 1960s, and since then about five hundred people    into space. 

—Do you think he can get the first prize for jumping?—Impossible now. He    to do so, but he has just hurt his leg. 

 —Hi. Mary. Do you still remember the first time we met?—Sure. You    dinner with your friends in a restaurant. 

All school buses in the northwestern provinces    with satellite positioning devices next year. 

It was a pity that when we hurried to the lecture hall, the lecture_________, so we heard only the end and missed most part of it.

His ex-husband, whom she _________ last year, is now living in America.

- You look exhausted! - I __________ tennis with my friend all the morning.

— Can Jeremy Lin lead New York Knicks to win the next game?— Out of the question now. He ______ to do so, but he has just hurt his leg.

If you ______ a fresh mind for an interview, be sure to have a good sleep the night before it.

—I’ve got to go now.— Must you? I _________ you could stay for dinner with us.

Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.