【题目】It was not until I was chosen monitor of the class ________ to realize the importance of teamwork.
A.did I come.
B.had I come.
C.when I came.
D.that I came.

【答案】D
【解析】考查强调句型。句意：直到被选为班长，我才意识到团队合作的重要性。强调句型：It is/was +强调部分+that (若强调部分指人也可用who)+其他。根据句意可知选D。