Don't .You will new customs and different ways of thinking.
A. lose your heart；apply to
B. lost heart；apply yourself to
C. lose your heart；adapt to
D. lose heart；adapt yourself to
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A. lose your heart；apply to
B. lost heart；apply yourself to
C. lose your heart；adapt to
(答案→)D. lose heart；adapt yourself to
解析：此题考查动词的固定搭配。lose heart“灰心”，系固定搭配；adapt yourself to“使你自己适应……”。