I.Write the complete sentences,using the words and phrases given.
1.Our friend/birthday/next week/we/give/present/that/he/dream/long time.
2.The/clearly/teacher/explain/lessons/faster/we/understood/them.
3.Scientists/think/how/use/rise/fall/tide/produce/electricity.
4.Tam/Linh/who/not come/class/yesterday/explain/absence/teacher.
5.I/be/surprise/that/people/walk/grass/but/no one/tell/them/it.