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
单项选择题 John regretted（）ashore yesterday.
单项选择题 Lifting the anchor from the bottom is called（）.
单项选择题 Lines drawn through points on the earth having the same atmospheric pressure are known as（）.
