John is very ——if he promises to do something he’ll do it .A. independent B. confidentC. r

问题补充：

John is very ——if he promises to do something he’ll do it .

A. independent

B. confident

C. reliable

D. flexible

答案：

A. independent

B. confident

C. reliable

D. flexible

解析：

independent 独立的；confident 有信心的；reliable 可靠的；flexible 灵活的