Had he______her promise, she would have made it to Yale University.
A.looked up toB.lived up toC.kept up withD.come up with在线课程B
解析：
试题
分析：考查词组辨析：A. looked up to尊敬，敬重，B. lived up to达到…的期望，不辜负，C. kept up with跟上，D. come up with 提出，句意：要是她履行诺言，现在就会进入耶鲁大学了。选B。考点：考查词组辨析