单项选择题
（）is the officer responsible for the overall maintenance of deck department.
A. Bosun B. Chief officer C. Third officer D. Second officer
单项选择题 Pull out the nails （）a claw hammer?
单项选择题 Can you show me how to （）the screw?
单项选择题 The （）is loose. Lend me a screw driver, please.
