________ Pierre began to help his father with the farm work when he was
| A．In 1980’s; his teens | B．At the 1980’s; the teens |
| C．In the 1980s; in his teens | D．In 1980’s; in the teens |
_______ with the present situation, the local government could not find effective measures to reduce the risk of coal mine accidents.
| A．Though unsatisfied | B．As unsatisfied |
| C．Though unsatisfied it was | D．As it was unsatisfied |
. Barack Obama told millions watching him that his grandmother’s influence on _______ he is and the way he views the world was significant.
| A．how | B．who | C．where | D．which |
A big earthquake hit Yushu, Qinghai province in the early morning, and if a little later, many more people _______.
| A．could survive | B．might have survived |
| C．must have survived | D．should survive |
After graduation I’d like to find a job I can use what I have learnt at school.
| A．when | B．which | C．where | D．that |
. —Haven’t I told you that I like the beef well-done?
—Yes, but I _______ it longer than I usually do.
| A．was cooking | B．cooked | C．had cooked | D．will cook |