问题描述：
.it -------snows in Shanghai in winter
A sometimes B usually
it is raining outside .-------- -------- your raincoat.
A putting on B put on
i will tell him as soon as he -------
A returns back B returns
A sometimes B usually
it is raining outside .-------- -------- your raincoat.
A putting on B put on
i will tell him as soon as he -------
A returns back B returns
问题解答：
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