Nearly________ of the surface of our planet is covered by water.
| A．seven-ten | B．seven-tenth |
| C．seventh-ten | D．seven-tenths |
--You look troubled.
--Father asked me to finish this task today. How can I _________ ？
| A．manage to | B．attampt to | C．decide to | D．happen to |
. After the earthquake, the Haitian（海地的）people needed to be helped _________.
| A．occasionally | B．anxiously | C．practically | D．urgently |
There is no _________ that the Chinese people will present to the world a successful, splendid and unforgettable exposition（博览会）.
| A．belief | B．doubt | C．possibility | D．need |
It’s certain that holding such _________ National Day parade will significantly improve _________ national pride and self - confidence of the Chinese People.
| A．the; the | B．a; a | C．a; the | D．the; a |
We _________ last night, but we went to the concert instead.
| A．must have tudied | B．might study |
| C．should have studied | D．would study |