题目选项分析

In theory, international civil servants at the United Nations are prohibited from continuing to draw salaries from their own governments；in practice, however some governments merely substitute living allowances for their employees' paychecks, assigned by them to the United Nations.

In theory, international civil servants at the United Nations are prohibited from continuing to draw salaries from their own governments；in practice, however some governments merely substitute living allowances for the paychecks of their employees who have been assigned to the United Nations.