In the absence of your definite instrucions___ insurance ,we covered your ordered goods against A.R.for 110% of the invoice value.a.concerning b. regardingA能選嗎？B是對的。謝謝！

熱心網友

concerning or as to are all right.

熱心網友

不嚴格來說兩個答案都對,但后者更加確切些.因為它的意思是with reference to(sb/sth);concerning,而concerning 是about(sb/sth).因此我們可以說regarding 更加確切些.如果是在商務寫作中,這兩個詞都可以用的.