问题
选择题
单项选择（每题1分）
In his letter was his promise _____ he would spend the Christmas Eve with me.
A．that
B．what
C．which
D．whether
答案
答案：A
考查同位语从句。Promise“承诺，许诺”，后跟that引导的同位语从句，对promise进行补充说明。句意“他在心中作出承诺，会和我一起过圣诞节平安夜。”故选A。