Here are the correct answers for each numbered blank in the passage:

1. **C. go cycling**
- "Sometimes I (1) go cycling in a park near my house."

2. **A. while**
- "I spend about an hour doing (2) while. I really enjoy it."

3. **C. cooking**
- "I also cook special food on special (3) cooking."

4. **B. occasions**
- "When I’m alone at home, I often read (4) listen to music."

5. **A. draw**
- "There is a rap (5) draw going on at the moment."

So, the completed passage will read:

"I’m sure that everyone has at least one hobby. For me, it’s more than one. During my vacation in summer, I often go swimming in the morning. Sometimes I go cycling in a park near my house. These outdoor activities help me stay fit and healthy. When I get home, I spend about an hour doing while. I really enjoy it. I clean the house, cut some flowers from the garden to decorate the living room. I also cook special food on special cooking. Preparing the food is time-consuming, but I love seeing my family enjoying the food I cook. When I’m alone at home, I often read listen to music. I read stories written by both Vietnamese and foreign writers. One of my favourite books is Alice in the Wonder Land. For music, I like rap. There is a rap draw going on at the moment. I never miss it. At first, my parents said that they could not understand my hobby. But now, we all watch the programme together."