1. Why didn't Nam come to the party ?c. Because he had a lot of homework to do.

2. Why were you late ? d. Because we misse the first bus.

3. Why do they have to leave soon ?a. Because they'll have an appointment at ten.

4. Why are you laughing ?e. Because the stories are so funny.

5. Why don't you take a taxi ?f. Because I don't have enough money.

6. Why did your sister stay late at the office ?b. Because she had to finish the report.

7. Why couldn't Jane pass the final exam? g. Because she didn't study hard enough.

8. Why wasn't Mary at work yesterday ? hsd. Because she didn't feel well
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