【单选题】This boy is very intelligent, but his lack of ________ prevents his success.
【简答题】This boy is very intelt, but his lack of prs his success.
【单选题】This boy is very intelligent, but his lack of _______ prevents his success.
【单选题】This boy is very intelligent, but his lack of_____ prevents his success.
【单选题】This boy is very ________; he may be another Edison.
【单选题】This boy is very smart. He may be __________ Edison.