_____ the fact that David failed in the competition ,his teacher thought he had done his best.
| A．benefit | B．profit | C．power | D．advantage. |
The Chinese river dolphin is one of the First-Grade State Protection animals, a (an) mammal with its name – water panda.
| A．rare | B．official | C．extreme | D．universal |
People often want their life to go perfectly, but accept the that nothing on the earth is flawless.
| A．reality | B．quality | C．identity | D．responsibility |
On Saturdays, students are very proud to be on the street to guide passers-by to obey traffic rules.
| A．characters | B．volunteers | C．operators | D．graduates |
Jack tries his best to learn how to make a vase, in order to their promise to finish an artwork with her.
| A．bury | B．solve | C．perform | D．organize |
I have created these sentences to give you a chance to the world of English vocabulary and its hidden beauty.
| A．select | B．replace | C．explore | D．decorate |