One third of the country _____ covered with trees and the majority of the citizens _____ black people.
-- Shall we take a taxi there since time is limited? -- ________. It should be hard to get one during the rush hour.
Traveling without ordering rooms in advance can eat up precious vacation time ________luck is smiling on you.
-- It’s more convenient to take a subway than drive a private car. -- ________. What’s more, it’s also a good way to support the low-carbon lifestyle.
It is known to all that the US is about the same size as China, whereas its population is five times________.
Three days after the aircraft went missing, an international effort ________ ships and planes hasn't found any wreckage, ________ growing frustration for the families of the 239 people on board.