I’m sorry, ____ I won’t be able to come tonight.
A. for B. and C. but D. or
I’m sorry, ____ I won’t be able to come tonight.
A. for B. and C. but D. or
C考查交际用语。 事实上,I’m sorry 后习惯上不接表示原因的连词 for,而接表示转折的连词 but(也可省略 but),用以委婉地提出一个使对方不快的事实。但防止误选for.