would / we / be grateful / an invitation / could send us / to th

would / we / be grateful / an invitation / could send us / to the exhibition / if you
【正确答案】：We would be grateful if you could send us an invitation to the exhibition.
【题目解析】：本句句意为如果您能寄给我们一份展览会的邀请函，我们将不胜感激。根据句意本句是在表达请求，We would be grateful if you could为表达 请求的固定句型。再根据给的提示词，所以答案如上。