It is estimated that 12.79 million new urban jobs have been created this year, which almost doubles _____ it was last year.
A.how B.which C.where D.what
The Oxford Dictionary is useful for you to learn English, so you'd better buy _____.
A.it B.one C.that D.the one
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
