prevent her from going to the party, he pretended to be ill .
A. So as to, by design
B. In order to, on purpose
C. So as to, by accident
D. In order to, with purpose
网友回答
A. So as to, by design
(答案→)B. In order to, on purpose
C. So as to, by accident
D. In order to, with purpose
解析：考查固定搭配。So as to为了（该词组不能放在句首）；in order to为了（可以放在句首，句中等位置）；by accident偶然；on purpose故意；句意：为了阻止她去参加聚会，他故意地假装生病。根据句意说明B正确。