这件事标志着他辉煌事业的开始。
This event _________________________________________ .
这部纪录片近距离的观察了非洲象的生活。
The documentary _______________________________ the African elephants.
The Great Wall as well as the Palace Museum ___________(attract)lots of tourists from abroad every year.
In the old days the working people in our country __________ ( look) down on.
It was a pity that you _____________ (not attend) the meeting last Friday afternoon.
— What is he busy doing?
— Doing the experiment _____ (complete) the science project.
