改错题：我忖思：他怎么会当上处长呢？
参考答案：
“忖思”为生造词，正确的形式为“思忖”，但为书面语词，用在此处不合适，应改为口语词“想”。
把命题“对顶角相等”写成“如果…那么…”的形式为：如果______，那么______．
It was not until 2010, _______his son took over the company, _______ the crisis was dealt with.
A．when; that
B．that; that
C．that; where
D．when; where
