electricity/dangerous

limited/replaced/renewable

convenient/abundant

pollution/natural

shortage

bài4

1 It is sloar renewable safe and moreover isenergy clean

2 I watched the samba danced and the parade

3 Minorities drink rice wine through a tube bamboo thin long people ethnic also of

4 We is have the effect footprint negative on the environmental

5 Wind is abundant convenient and power

6 the source energy new is not costly

8 Trip avoid using car or motorbike for trip 

7 People many poor have little alectricity in countries develping

9 People living in area rural use biogas for cooking and heating

Bài 5

1 electricity / dangerous

2 replace / source / limited / renew

3 convenient/ abundance

4 pollution / natural / resources

5 short