【题目】You can’t imagine how excited we were ________ that our schoolmates had won the first place in National Robot Competition.
A.learningB.having learned
C.to be learningD.to learn
在线课程【答案】D
【解析】
考查非谓语动词。句意：你无法想象我们是多么高兴当得知我们的同学获得全国机器人大赛第一名的时候。be excited to do sth做某事很兴奋，这里是感叹句，被感叹的词是excited，所以how +形容词 +主语+be to do，故选D。