He was a ____(代表) of Russia to the UN.
2017年3月十二届全国人大四次会议召开,大会审议批准了***的《政府工作报告》。这是全国人民代表大会在行使( )
——My friend has achieved his goal after years of hard work.
——Great! ________.
解方程组:x+2y=33x-y=2