The computer was used in teaching. As a result, not only , but students became more interested in the lessons.
The students are forbidden,unless they have special passes,________after 11 p.m.
It's quite obvious that the aging population in China will cause heavy pressure on ________ whole society in the future.
Taobao.com has begun selling tickets online for international flights, ______ to cut the market share of Ctrip.com and other competitors.
Employers often give jobs to _______ they believe has work experience and a stong sense of duty.
Standing on the top of the hill, one would not do anything, but _____ the flowing of the clouds around me.