He was on the scene and saw what happened, which makes him the only witness who provides an ______ account.
A.authentic B.ambiguous C.arbitrary D.artificial
―Why are you so excited?
—I met Tommy just now. We _____ each other for ages.
A.haven’t seen B.didn't see C.hadn't seen D.don't see
_____ by a burning desire for adventure, Li Bai left home and started to travel around in his early twenties.
A.Having driven B.Being driven C.To drive D.Driven
_____ having a roommate inevitably has its challenges, it can also be a great part of your college experience.
A.While B.When C.As D.If
A former tai chi world champion is teaching tai chi classes in New York _____ broadening the appeal of Chinese culture.
A.in place of B.in hope of . C.in praise of D.in case of
Jack had planned to visit his grandparents last weekend, but an emergency _____ and he had to reschedule.
A.should come up B.had come up C.came up D.would come up
