I couldn't help____ when hearing the funny story
问题描述:
I couldn't help____ when hearing the funny story
为什么选laughing 而不是laugh lauged laugs
答
固定句式,cant help doing somethingӢ�ﱾ����û������������㲻��ѧ�һ������ѧ��ѧ����ѧӢ�ﵱȻ���У�Ҳû���õ�