This is ______ we should do.
A. who
B. what
C. which
D. where
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Will this ______ fresh water supply on board?
A. related
B. permmit
C. affect
D. effect
The separator may be working ______.
A. security
B. commonly
C. normally
D. often
Bearing knock is found, it ______ remedying.
A. leads
B. find
C. work
D. needs
你应该出示你的安全证书。
A. I may have a look at your Safety Certificate.
B. I may have a look at your Oil Record Book.
C. You should show me your Security Certificate.
D. You should show me your IOPP Certificate.
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