单项选择题
In order to ______ the improved features of the new model dishwasher, the salesman encouraged the customer to operate it by himself.
单项选择题 He stopped the car so ______ that he was hit by the car behind him.
单项选择题 ______ there is little we can do to change the reality, we can not be totally at the mercy of the harsh environment.
单项选择题 In no case ______ ever betray your better nature.
