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6. She can stay in her workroom for 10 hours without eating or sleeping, all her attention ___ her painting.
A. focusing on
B. focused on
C. focusing in
D. focused in
(责任编辑：admin) |
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6. She can stay in her workroom for 10 hours without eating or sleeping, all her attention ___ her painting.
A. focusing on
B. focused on
C. focusing in
D. focused in
(责任编辑：admin) |