4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a 4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a short time D.in a so short time

4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a 4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a short time D.in a so short time
4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a
4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a short time D.in a so short time

4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a 4.It is impossible to finish the task ____.A.in such sort a time B.in so a short time C.in such a short time D.in a so short time
选 C.in such a short time
so是副词,常常用来修饰形容词或副词
such是形容词,修饰名词（包括名词短语）