John is very — if he promises to do something he’ll do it.A. reliableB. confidentC. indep

问题补充：

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

A. reliable

B. confident

C. independent

D. flexible

答案：

(答案→)A. reliable

B. confident

C. independent

D. flexible

解析：考查形容词：A. reliable可靠的，B.confident自信的，C. independent独立的，D. flexible灵活的，句意：约翰很可靠，如果他答应做事情他会做的。选A。