Answer:

1.We don't buy a merchandise because it's expensive.

2.She sings as well as dancing.

3.My crush didnt liked me back even though I did good to him.

4.I moved on before it's too late.

5.You cant go on vacation unless you save some money.

1.but

2.and

3.or

4.yet

5.so

Exercise 2

1. Jake went to the forest, because he loves walking among the trees.
2. Ni-Ki is good at dancing as well as singing.
3. They could do their own cooking, even though it wouldn't be as nice.
4. She gave everyone a present before she left.
5. I'm not going to the party unless you come too. I don't want to go alone.

Exercise 3

1. but
2. and
3. or
4. yet
5. so