Optional B&B:

• Match the first part of the sentences with the second part: ( 0 Conditional )

If you cross an international date line, 
If it rains, 
If she doesn't know the answer,
Wood doesn't burn
If you heat water to 100 degrees, 
If you freeze water,
If I work too much,
If I have time, 
If they come here,
If she eats hamburgers, 


the time changes.
she gets an allergy.
the grass gets wet.
if there is no air.
they always bring a present.
I get tired.
it boils.
she keeps silent. 
it turns into ice.
I usually go to the movies.

• Continue the following phrases: ( 1st Conditional )

If I feel tired, I’ll go to bed early. If I go to bed early, I won't watch TV. If I don't watch TV,......

• Complete the Imaginary Situations ( 2nd Conditional )

1. If animals could speak,....
2. If money grew on trees,...
3. If everyone was telepathic,...
4. If you had two heads,....
5. If time travel were possible,.....