However, at times this balance in nature is ________ resulting in a number of possibly unforeseen effects.A. troubled B. bothered C mixed D. disturbed
More than five doctors and rescuers have got to Yushu County up to now.
-- I’m very tired, helping with the clothes. ----Why not take a rest ,then? ----- ________.
Oh, it’s so cold in here. Somebody ____ the window, please.
-----Excuse me. Could you direct me to the nearest post office? ______ straight on and you’ll see it on your right.
–----- Have you been to the Great Wall? ------ Perhaps not in my memory. _______, it might have been during my early childhood.