问题补充：
He made a promise he would help me.
A. what
B. when
C. that
D. which
答案：
A. what
B. when
(答案→)C. that
D. which
解析：
that引导同位语从句,说明promise的具体内容。
时间：2021-08-21 10:58:17
He made a promise he would help me.
A. what
B. when
C. that
D. which
A. what
B. when
(答案→)C. that
D. which
解析：
that引导同位语从句,说明promise的具体内容。
