Ответ:

(Все по порядку I II III)

1.If I live near a wood, I will gather a lot of
mushrooms. 

If I lived near a wood, I would  gather a lot of mushrooms.

If I had lived near a wood, I would have l
gathered a lot of mushrooms.

 

2. If my father return early, we will watch TV
together. 

If my father returned early, we would  watch TV together.

If my father had returned early, we would have  watched TV together.

3. If she
know English, she will  try to enter the
Univer-sity.

If she knew English, she would  try to enter the Univer-sity.

If she had known English, she would  have tryed to enter the Univer-sity. 

4. If you
are busy, I will leave you alone. 

If you were busy, I would leave you alone. 

If you had been busy, I would have left  you alone. 

5. If my
friend come to see me, I will very glad. 

If my friend came to see me, I would be very
glad. 

If my friend had come to see me, I would have
been very glad.

6. If
mother buy a cake, we will have a very nice tea-party.

If mother bought a cake, we would have a very
nice tea-party.

If mother had bought a cake, we would have had a
very nice tea-party.

                   

7. If we receive a telegram from him, we won t
worry. 

If we received a telegram from him, we wouldn t worry. 

If we had received a telegram from him, we
wouldn t have worried. 

 

8. If you don t work systematically, you will
fail at the examination.

If you didn t  work systematically, you would fail at the
examination.

If you hadn t  work systematically,
you would have falt at the examination.