随着信息技术的发展,越来越多的人在网上开店和购物,但不少人利用网上无凭证的便利不交税款。这种行为属于( )
.This January will be very precious for us by which time we _______reviewing Senior Book I.
. There is no doubt that being good at communicating is a great_________, especially when you are looking for a job.
The winning of hosting ______ 2010 World Expo is ______ victory not only for Shanghai residents, but for the people of the whole Chinese nation.
.Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale.
.__________, we would not have achieved so much.