在下列各句的空白处填入一个最恰当的单词

1. He becomes sad easily. Let's __________ him up.

2. I often help mum __________ the dishes on the table before meals.

3. If you are good at playing soccer, you can help __________ a soccer team for kids.

4. There are many traffic __________ along the street. They can help you find the museum.

5. He likes animals very much.  He wants to be a __________ in the future.