Pembahasan Tenses Google, American search engine company, ________ by Sergey Brin and Larry Page. was founded in 1998 has been found in 1998 was founding in 1998 had found in 1988 The perfect lawn _______ of the American dream because of the rise of suburbia in post-WWII. is becoming potent symbol became a potent symbol becomes a potent symbol was become a potent symbol The unicorn, a mythical animal, ____________ for over 2,000 years. have been known is known has been known was known Relationships between lexical and phonological developments ___________ for over ten years of children development. have been well documented is well documented was well documented well document Nowadays, mobile phones and the internet _______________ . became the primary needs of society becoming the primary needs of society have become the primary needs of society become the primary needs of society Time is Up! Time's up
