It turned out that the hotel was so near. I ______ the taxi.
A.needn't have taken B.must have taken C.should take D.could take
The researchers say they will ______ more studies to confirm the results.
A.give away B.make out C.carry out D.put up
A number of foreigners______ to watch the 70th anniversary of the founding of the PRC on Oct.1".
A.Attracted B.have attracted
C.was attracted D.were attracted
When it comes to modern communication, network safety is always a major ______ .
A.concern B.advantage C.opportunity D.solution
——I'm afraid I can't complete the marathon next week.
— ______ ! You have been practicing a lot.
A.No problem B.Go ahead C.Cheer up D.Good luck
We must fully obey traffic rules, otherwise everything would be ______ .
A.out of touch B.out of order C.out of date D.out of sight
