The manager _______ the workers how to improve the program since 9 a.m. 

I don’t know whether he has finished the novel, but he ________ it this morning.

His work was_____by his boss.

----Have you worked in this company for a long time? ---- Yes, since I _________ from the college.

I _____ Wang Tao in the street yesterday. We _____ each other since he went to Beijing.

Climbing Mount Tai           great skills and           not without risk.

—Is this raincoat yours? —No, mine _____ there behind the door. 

If you _____ him yesterday, you _____ what to do now. 

The volleyball match will be put off if it _____.　

----We’ve spent too much money recently.-----Well, it isn’t surprising .Our friend and relatives              around all the time.

    from the top of the tower ,the south foot of the mountain is a sea of trees.

Mrs. White showed her students some old maps    from the library.

The manager found that his office ______ the day before.

Bats are surprisingly long-lived creatures, some____________ a life span of around 20 years.

Last month, the Japanese government expressed their thanks for the aid they ______ from China.

By the time the fire-engine arrived, the fire        by the inhabitants.   

I stayed at a hotel the last time I went to Bei Daihe. The window of my room 　　　 the sea.

—I haven’t finished my essay because the computer broke down when I was downloading the required data last night.—Really! You could have turned to me. I         mine.

When and where to build the new factory ___ ________ yet.

Social attention should be paid          our earth from        .