【题目】—Tom hasn’t come to class yet? —What do you think？
A.did happen to him
B.has happened to him
C.he happened
D.he has happened

【答案】B
【解析】句中的do you think为插入语，去掉插入语，不影响句子的正常语序；句意：—汤姆还没来上课？—你觉得他出了什么事？根据句意，故选B。