Many netizens are impressed with the excuse given by a teacher for quitting her job ______ she owes the world a visit.

Tony, a good basketball player, has the ofbeing the tallest boy in the class.

of language learning,­­­­________ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.

In a new study of African elephants，researchers havefour distinct characters that are among a group.

Miss Jones is leaving to get married and Miss White will be _______ the class.