His sunburnt face is just like that of millions of Chinese farmers, whom he has struggled the past five decades.
It was not until the end of last year _____ the economy in our country began to develop rapidly.
---Anna, you look so tired and wet all over! ---Well, you know, all morning I _______ my books to my new office on the third floor.
---It was dangerous to throw that bottle out of the window. You could have hurt someone. ---I’m so sorry! I _______ .
Tsinghua University, ______ in 1911, is home to a great number of outstanding figures.
---May I take this book out of the reading room? ---No, you______. You read it in here.