12.  Mo Yan was awarded the Nobel Prize for Literature in 2012, _______ made one of the Chinese people's long-held dreams come true.

11. A horrible thought    him when he was waiting for Tom in the airport ： Whaf if the plane from Malaysia had been hijacked(劫持)?

A. attacked     B. struck

C. beat       D. occurred

11.  There is no simple answer, _______is often the case in science.

 10.  Helping others is a habit, _______you can learn even at an early age.

9.   In the classroom there are 10 tables, _______you can sit there to read.

8.   I have heard from my father, _______is working in a big company in America.

7.   This dictionary, a few pages_______are missing, is of no use.

6.   I shall never forget those days when I studied in a small school in the countryside, _______has a great effect on my life.

5.   Her father works in a big factory, _______he is in charge of cars.

4.   The old man had two sons, both_______are working abroad.