单项选择题
A.down B.to C.up D.in
The first cabin astern of the saloon is（）.A.heB.himC.hi...
单项选择题The first cabin astern of the saloon is（）.
A.he B.him C.his D.they
Secure danger area and （）, please.A.reportingB.reportC....
单项选择题Secure danger area and （）, please.
A.reporting B.report C.reports D.reported
Danger area （）.A.securedB.securesC.securingD.securely
单项选择题Danger area （）.
A.secured B.secures C.securing D.securely
