Minister Bill De Blasio ______ in office fewer than 48 hours when he came face to face with his biggest challenge in his life.
A. has been B. had been C. would be D. is
Private taxi booking apps have ______ like mushrooms in the past few months because of their convenience and high efficiency.
A. broken up； B. lined up；C. come up；D. sprung up
The Beatles, the supreme rock and roll band of the 1960s, were in many ways pioneers for ______ was to come, like holding concerts in sports stadiums.
A. which B. what C. whoever D. that
Security devices at airports are ______ to spot weapons that could be used by terrorists.
A. pretended B. intended C. demanded D. declined
You ______ pay too much attention to your reading skills, as they are so important.
A. shouldn’t B. mustn’t C. can’t D. needn’t
Sara, my colleague, has been ______ the run all week preparing for her son’s wedding.
A. in B. to C. on D. at
