should be

• Rewards should be according to performance .
  应该按工作成绩给予酬劳。
• Stray and unowned dogs should be impounded .
  应该拘禁走失的无主的狗。
• What the teacher said should be taken seriously .
  教师的话很有斤两。
• Infusion should be completed within six hours .
  输注应于六小时内完成。
• This card should be kept on file for reference ..
  此卡应存案备查。
• What should be our general line of action ?
  我们的行动方案应该怎样呢？
• All necessary materials should be on hand .
  一切必须的材料应准备就绪。
• "this hand should be stitched," she said .
  “这只手得缝几针，”她说。
• This card should be kept on file for reference ..
  此卡应归档备查。
• He should be now glad to compose himself a little .
  眼下他很想养养神。