His parents are convinced ____ the fact the their son always focuses his mind ___ his study. A. of; ...
2023-01-14 18:40:02 210次 2013届长春市上学期高二第二次月考英语试题 选择题 反馈错误 加入收藏 正确率 : 100%
题目内容：
His parents are convinced ____ the fact the
their son always focuses his mind ___ his study.
A. of; on B. of;
at C. by; to D. on; at
本题链接：
