请阅读一篇有关世界各地庆祝生日的文章，根据所提供的信息，用完整的句子回答问题。
   Children all over the world like celebrating（庆祝）their birthdays.Here are some special birthday celebrations：
   Japan：In Japan，some birthdays are more important than others.For example，the 3rd and the 7th birthdays are very important for girls，and the 5th for boys.The birthday child wears new clothes for the special day.
   Germany：In Germany，parents and teachers never give the birthday children homework or housework on their birthday.And parents often make the house beautiful with flowers and lights on a child's birthday.
   Denmark（丹麦）：In Denmark，people put a flag outside the window to show that their child is having a birthday.They put presents around the child's bed when he is sleeping，so he will see them at once when be wakes up the next morning.
   Israel（以色列）：In Israel，parents usually make a crown（皇冠）with flowers or leaves for their birthday child.The child wears the crown and sits in a chair.Guests sing and dance around the chair.
   Vietnam（越南）：In Vietnam，everyone celebrates their birthdays on New Year's Day.On that morning，parents give the birthday children red paper bags with "Lucky Money" in it.
（1）Which birthday is very important for a Japanese boy？

The 5th birthday.

The 5th birthday.

（2）What do parents and teachers in Germany never give to birthday children？

Never give the birthday children homework or housework.

Never give the birthday children homework or housework.

（3）Where do people in Denmark put a flag for a birthday child？

Put a flag outside the window.

Put a flag outside the window.

（4）What do people use to make a crown for a birthday child in Israel？

Make a crown with flowers or leaves.

Make a crown with flowers or leaves.

（5）When does everyone celebrate their birthdays in Vietnam？

On New Year's Day.

On New Year's Day.