He never fails __________ his mother on her birthday.<br>A. when he phones<br>B. to phone<br>C. phoning

He never fails __________ his mother on her birthday.
A. when he phones
B. to phone
C. phoning

出自：国开英语2

提示：
每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10253414】个 (题库试题定时更新)