单项选择题
They should （）care of anchors to ensure that they are in normal condition.
A.took B.take C.taking D.taken
单项选择题 Please （）.I’ll go and ask him to come.
单项选择题 -How do you do, Chief Officer! -（）
单项选择题 Welcome aboard. Our master is expecting you in his cabin. Come （）.
