16.
2 would tidy
3 hadn't lent
4 knew
5 had learnt
6 came
7 talked
8 hadn't left
9 would pay
10 would be
11 had been accepted
12 would stop
17.
2 I wish I had got up earlier.
If I had got up earlier I wouldn't be late for school now.
3 I wish I saved some money.
If I saved some I could buy a bicycle now.
4 I wish I hadn't touched a cooker.
If I hadn't touched a cooker I wouldn't have burnt my finger.
5 I wish I had studied for the test.
If I had studied for the test I could answer the questions now.