问题补充：
It was not until he saw his mom .
A. did the little child stop crying
B. that the little child stopped crying
C. the little child stopped crying
D. when the little child stopped crying
答案：
A. did the little child stop crying
(答案→)B. that the little child stopped crying
C. the little child stopped crying
D. when the little child stopped crying
解析：考查强调句的特殊句型：It was not until+that…,直到…才…,句意：直到他看见妈妈小孩子才不哭。这个句型不同于not until在句首的倒装句，选C。
