John is very . －if he promises to do something he’ll do it.A. independentB. confidentC. re

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：考查形容词词义。A项独立的；B自信的；D灵活的均不和句意； 根据后句关键词promises ----hell do it 可知他是可靠的，可信赖的，选C。