Ai xem giúp bài này của mik vs ạ, mik cảm ơn

V Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 19 to 24. The Gobi Desert is in Northern China and Southern Mongolia. It (19) 1.29 million km². The rain, only about name "Gobi" means "a waterless place" ...