1
Water, wind and the sun are .......sources of energy
2
……….…………is one of the most dangerous problems that face the environment
3
If you look for something to keep the food in, you can use this ….…………
4
It is better to ………………the used materials to save our resources
5
This baby is very…….....
because his mother is still too young
6
The new technology has a good……… on modern industry
7
We should …………… old materials like plastic, paper and glass
8
Wars and conflicts have a negative ……………. on people’s lives
9
Don’t be shy. You should express your opinion …………….
10
If you ……………. the amount of food you eat, you will be fit
11
Hold this vase ……………please. You may break it easily
12
Students should ………………pictures to their projects
13
Volcanos can erupt violently and .................to destroy buildings around
