Given the correct from of the verb or the word in backets

Part 3: Given the correct from of the verb or the word in backets
1.On Saturdays, my mother usually ( go ) ................................. shopping
2.My brother ( buy ) ........................... this house ten years ago
3. A supermarket will ( build ) .......................... in my neighborhood next month 
4. These students enjoy ( read ) ...................... magazines in their free time
5. Would you like ( come ) .......................... and visit me next summer?
6. Tuan has taken part in different charity ( active ) ......................... in his town
7. The gas from the chemical factory is extremely ( harm ) ......................... 
8. If we go on littering, the environment will becom ( serious ) .............................. polluted