12.
→If this hat weren't very beautiful, she wouldn't buy it.
→Were this hat is not very beautiful, she wouldn't buy it.
13.
→Unless you write carefully, you will fail the exam.
15.
→If the wind doesn't blow hard, I'll take the boat out for a ride.
→Were the wind doesn't blow hard, I'll take the boat out for a ride.
16.
→Women in rural areas should create more jobs for the government
