Along with the letter was his promise he would visit me this coming Christmas.A. whichB.

问题补充：

Along with the letter was his promise he would visit me this coming Christmas.

A. which

B. that

C. what

D. whether

答案：

A. which

(答案→)B. that

C. what

D. whether

解析：考查同位语从句。同位语从句That he would visit me this coming Christmas解释promise的内容，that引导起同位语从句，只起连接作用。句意：随同他的信而来的是他的诺言，他会在即将来临的圣诞节期间来看我。