一道英语的首字母填空题people are b( ) shopping and cleanning their house

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一道英语的首字母填空题people are b(      ) shopping and cleanning their house

一道英语的首字母填空题people are b( ) shopping and cleanning their house
一道英语的首字母填空题
people are b( ) shopping and cleanning their house

一道英语的首字母填空题people are b( ) shopping and cleanning their house
busy
be busy (in) doing sth.
忙于做某事

begging