After the________ journey from Jiuzhaigou, Tom returned home, ________ .

 It can’t be a(n) _____ that four jewelry stores were robbed in one night.

---It is not a secret that CEOs of major companies earn a large amount each year.--- I agree. ____ the hard economic times, it seems that their salaries have remained the same.

Apple sold ____ tablets ,the new ipad, in September alone as Samsung Galaxy series.

(2011·金华十校3月联考)The conference has been held to discuss the ________of global warming on people’s lives all over the world.