--- ?
---I’m not sure, but he might have been ill in bed.
A. What do you think has happened to Tom
B. What do you think Tom has happened
C. Do you think what has happened to Tom
D. Do you think what Tom has happened
网友回答
(答案→)A. What do you think has happened to Tom
B. What do you think Tom has happened
C. Do you think what has happened to Tom
D. Do you think what Tom has happened
解析：可联系答.案.网客服索取。