--I lost my MP4 on my way home this afternoon. ! You must be careful next time.A. Take

问题补充：

--I lost my MP4 on my way home this afternoon.

-- ! You must be careful next time.

A. Take care

B. Look out

C. Pay attention to

D. What a pity

答案：

A. Take care

B. Look out

C. Pay attention to

(答案→)D. What a pity

解析：当别人丢掉东西，应该表示可惜，what a pity表示此意，故本题选D。