A-A+
At that moment when he was told that the radio
问题详情
At that moment when he was told that the radio station had found his son for him, it was all he could do ______.
A．cry
B．crying
C．to cry
D．cried
参考答案
正确答案：C
解析：固定结构题。it’s all sb can/could do to do sth．这一结构，表示“只能……”的意思，经常用于口语中。故C 正确。
