Complete the sentences using the words in brackets.
It's good idea to take an aspirin if you have a headache(take)--- You should take an aspirin if you have a headdache
1. It's no necessary to wear a suit to work.(have)---You_____ wear a suit to work.
2. It's a good idea to get the tickets early (buy)--- We____ iur tickets in advance.
3. He can't home until he has switched off all the lights(to)---He___ all the lights before he can go home.
4. A passport is necessary to enter the country(get)--- You____ if you want to enter the country
5. Smoking is forbidden in the waiting room(smoke)-- You____ in the waiting room
5. It isn't a good idea to wash your hair now. It's cold outside.(wash)--- You____ now. It's cold outside.