Not only spring but autumn is actually ______ good time for JiaXingers to experience ______ nature, especially when sweet osmanthus (桂树) fully blossoms.

A $1000 ____will be offered to anyone who helps to return the lost jewel .

It is required that employees in the company have to have a good__________ of English.

The dog, if trained _____, will be made a good watch-dog one day.

The last thirty years _________ the quick development in almost every field in China.

As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.

______ of the land in Jia Xing No. 1 Middle School _______ covered with trees and grass.

---When did you get to know each other ?

----It was in 2008___      we spent summer vocation together.

 It is only ______ you understand what your parents do to you ______ you can improve your relationship with your parents.

Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.