=>
Ex2/
1. sources
2. reserves
3. renewed 
4. renewable 
5. consumption
Ex3/
1. Jane reminded Tom to remember to call her that night.
2. Nga advised me to exercise more in order to keep fit.
3. Tung said that if he had enough money, he would buy a new smart-phone.
4. Mary was the last person to leave the class room.
5. Minh advised me not to drink too much coffee at night.
6. Minh was the last student to leave the library.
7. He said to me that he would come to see me when he had free time.

Ex2:
1.D. sources
2.A. reserves
3.C. renewed 
4.C. renewable 
5.D. consumption
Ex3:
1.............. Tom to remember to call her that night.
2................me to exercise more in order to keep fit.
3.................that if he had enough money, he would buy a new smart-phone.
4................. was the last person to leave the class room.
5................... me not to drink too much coffee at night.
6.................. was the last student to leave the library.
7. He said to me that he would come to see me when he had free time.