1. 根据汉语提示完成句子。

1. （1） Didn't you (玩得愉快) in the zoo?

3. （2） If we (乘出租车), it will be too expensive.

5. （3） The teacher gave me (一些建议) on how to study English well.

7. （4） If we don't have the party, (一半的学生) won' t be happy.

9. （5） When is a good time (举行宴会)?