Exercise 1:

1. They are happy because they got good grades;

2. They are confused because they didn't know the answer;

3. He is proud because he baked a delicious cake;

4. They are frightened because they watched the movie.

5. He is angry because he played a game

Exercise 2:

My last weekend was great becausd I was at a party. It was Jamila's birthday and she is my cousin. My sister was also there, but my brother wasn't there becuase he was in the village.

Jamila was happy because she liked her presents. We danced a lot and we played games. At the end of the day we were tired, but we were very happy.

Exercise 3:

1. Yesterday I was sad because my TV broke.

2. Today I am very happy, but my sister is not.

3. I visited my grandparents and brought them flowers.

4. I was surprised because I had lots of presents.

5. I am not afraid of spiders, but I am afraid of beetles.

Ответ: 1. they are happy because they have good grades.

2. They are confused because they don't know the answer.

3. He is proud because he made a difficult dessert.

4. they are frightened, because they are watching a scary movie.o