3道英语单选题,请大神来看看
Jimmy come close to be killed in a traffic accident the other day

        -(     He was driving carefully all the time.
        A.When        B.what     C.how
  2.(       ) Tom  （      ）this week?
    -No,he is on holiday.
     A.Has;worked          B.Does ;work        C.Did work       D.Is working
 3.You'd better button up your coat;it (       )cold and the wind is blowing
    A.gets         B.is getting    C.will get   D.has got
 求正确答案,说下理由谢谢