Traveling without ordering rooms in advance can eat up precious vacation time ________luck is smiling on you.
A. unless B. as C. if D. when
-- 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.
A. Quite so B. So is it
C. By all means D. All right
It is known to all that the US is about the same size as China, whereas its population is five times________.
A. as few B. fewer
C. as little D. smaller
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.
A. involved; causing B. to involve; caused
C. involving; causing D. involving; having caused
A much better way, as the press reveals, must be found to achieve an equal ________ of the resources.
A. distribution B. contribution
C. location D. separation
-- I wonder if you could go with me to the supermarket.
-- Don’t disturb me. I ________ my daily report this morning and haven’t finished yet.
A. write B. was writing
C. have written D. have been writing
