We would _______ if you would pass the letter _______ to the person responsible for the matter.
A.be obliged, in B.appreciate,on C.thanks, over D.be grateful,on正确答案D
We would _______ if you would pass the letter _______ to the person responsible for the matter.
A.be obliged, in B.appreciate,on C.thanks, over D.be grateful,on正确答案D
