At the conference, Premier Li Keqiang urged all the government departments ______ effective measures to improve work efficiency.

---Are you coming to Tom’s party? ---I’m not sure. I______ go to the concert instead.

 It's high time that we students ______ even harder at our lessons as the national entrance examination is coming nearer. 

＿＿＿＿＿he come, the problem would be settled. 

 I insisted that a doctor        immediately.