(2019安徽改编)How time flies! We ________ in China for so long.
A.work B.worked C.will work D.have worked
the, solved, you, have, yet, problem
________________________________________________________________________?
did, he, in, best, exam, the
________________________________________________________________________.
Peter, fastest, runs, class, the, in
________________________________________________________________________.
finished, homework, my, has, already, been
________________________________________________________________________.
method, your, is, much, than, easier, mine
________________________________________________________________________.