Give the correct from of the verb or the word in brackets

Part 2: Give the correct  from of the verb or the word in brackets
1. My father ( play ) .......................... tennis with his friend on Sundays 
2. Fashion designers ( print ) ....................... lines of poetry on the ao dai, haven't they?
3. Traffic rules should ( obey ) ......................... strictly by roads users
4. Would you like ( donate ) .............................. old books and toys to needy childern?
5. Most students enjoy going ( picnic ) ........................ when they have one Saturday off
6. In Russia, ( beauty ) ............................... painted and decorated eggs are offered as gifts
7. When cycling on the roads, remember: ( safe ) ............................ first.
8. In order to keep our environment ( pollute) ..........................., we shouldn't drop litter in public places