1.a,b,e
2.b,e
3.a,e
D.1.If I study, I will pass the test.
If I studied, I would pass the test.
If I had studied, I would have passed the exam.
2.If the sun shines, we will go swimming.
If the sun shone, we would go swimming.
If the sun had shone, we would have gone swimming.
3.They will fly to Canberra if they have money.
They would fly to Canberra if they had money.
They would have flown to Canberra if they had had money.
E.1.would have come
2.would go
3.had
4.will have
5.would have taken
6.find
7.liked
8.hadn't eaten
9.feels
10.would know