New Zealand struggles

New Zealand is struggling on 57/4 at tea on day-2 in the first test against Bangladesh. All the 4 wickets have fallen to the spinners. Shakib Al Hasan takes 3 wickets. McCullum and Flynn are at the crease. Can McCullum play a long innings to get his team to a comfortable position? A lot depends on McCullum, Oram and Vettori.