题目内容
—— Bob looks very blue. What has happened to him?
—— Perhaps his failure in the exam _____ his low spirits.
A accounts for B looks for C makes for D takes for
A
解析
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---Bob looks upset. What has happened to him?
---Perhaps his failure to the exam___ his low spirits.
| A．accounts for | B．looks for | C．makes for | D．takes for |