I apologize if I ______ you, but I assure you it was unintentional.

A:offend B:had offended C:should have offended D:might have offended

I apologize （　） being late but I missed the bus.

A:to B:by C:for D:of

I apologize ______being late but I missed the bus.

A:to B:by C:for D:of

I apologize ______being late but I missed the bus.

A:to B:by C:for D:of

I must apologize for my {{U}}outrageous{{/U}} behavior.

A:courageous B:greedy C:angry D:glorious

I have to apologize for my {{U}}abrupt{{/U}} departure yesterday.

A:Late B:unfriendly C:sudden D:unfold