I . Change the sentences into the passive voice
1 We will use sources of enegy more effectively for our future
--> Sources of enegy ..................
2 people in the cuontryside will increase the use of biogas for cooking
--> The use of biogas..................
3 They will build a hydropower station in the north of the cuontry nexr decade
-->A hydropower.........................
4 We will solve problem of enegy shortage by using solar enegy
--> the problem of enegy...........
5 The distance from my house to ha noi is over 20 kilometers
--> it's .............................................
6 My brother often watched tv in his free time last year, but he no longer does it
--> My brother used...................
7 people in the cuontryside will use much biogas in the future
-> Much biogas....... . . . . . . ..
8 The distanxe from Ho chi minh city to Phu Quoc island is about 300km
--> it is..................................... ...
9 Road users should obey traffic rules strictly
--> Tracffic rules..........................
10 Be careful or you'll hurt yourself
--> if you are.................................