The newcomers found it impossible to ________ themselves to the climate sufficiently to make permanent homes in the new country.
本题是一道词汇考查题。suit意为“使满意，适应”，(e.g.)，Does the climate suit you? adapt 意为“使适应，改编，改写”，(e.g.)you must adapt yourself to new condition. regulate意为“调节，标准(仪器，机械)”;coordinate意为“调和，协调”。