单项选择题
Jim is sorry（）so impolite to your guest last Saturday.
A.to be
B.being
C.having been
D.to have been
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John regretted（）ashore yesterday.
A.not going
B.not having been going
C.not to go
D.not to be going -
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Lifting the anchor from the bottom is called（）.
A.broaching the anchor
B.shifting the anchor
C.walking the anchor
D.weighing the anchor -
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Lines drawn through points on the earth having the same atmospheric pressure are known as（）.
A.isothermal
B.millibars
C.isobars
D.seismics
