I. Combine sentence with ' if '
1. We won't hold the festival. It costs too much money ( IF )
If.................................................................................................
2. People throw rubbish in the street doesn't look attractive
If...................................................................................................
3. There are so many billboards in our city. People can not enjoy the view
If.........................................................................................................................
4. There is so much light in the city at night. We can not see the stars clearly
If............................................................................................................................
5. The karaoke bar makes so much noise almost every night. The residents complain to its owner
If...........................................................................................................................................................
6. She has a headache after work every day. She works in a noisy office
If.......................................................................................................................