99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<ruby id="hwerh"><small id="hwerh"></small></ruby>

<dd id="hwerh"></dd>

單項選擇題

The quartermasters（）steer the ship and help the officer keep lookout.

A.duty
B.on duty
C.at duty
D.in duty

你可能感興趣的試題

單項選擇題

The captain is in（）command of the ship.

A.overall
B.over
C.all
D.task

單項選擇題

The officer of the watch（）a good lookout on the bridge.

A.keep
B.keeping
C.keeps
D.is keeping