He goes back home to see his parents ______ few weeks.
| A．every a | B．every | C．each | D．some |
The 8.8 quake in central Chile caused widespread damage, destroying lots of buildings and hundreds of thousands of people_______ .
| A．to affect | B．affecting | C．affect | D．affected |
After the SixParty Talk in Beijing, an agreement was reached _____that North Korea would abandon（放弃）_____ nuclear weapons.
| A．stating(声明); to develop | B．stating; developing |
| C．to state; to develop | D．states; developing |
________ his lessons , he failed in the exam.
| A．Not reviewing | B．Having not reviewed | C．Not reviewed | D．Not having reviewed |
Maybe you have been to many countries, but nowhere else _______ a more beautiful palace.
| A．can you find | B．you could find | C．you can find | D．could you find |
This problem may lead to more serious ones if_______ unsolved.
| A．making | B．left | C．remained | D．keeping |