Fill in the following blank with suitable words:
All the portable toilets are ……………… toilets.

Answer

To fill in the blank in the sentence "All the portable toilets are ……………… toilets," we need to identify the appropriate term that describes portable toilets.

### Step-by-Step Solution:

1. **Identify the Type of Toilets**: We need to think about what kind of toilets are typically portable. Portable toilets are often used in outdoor events, construction sites, and places where permanent toilets are not available.

2. **Consider Common Terms**: The common term used for portable toilets is "chemical toilets." This is because they use chemicals to treat human waste and minimize odors.

3. **Fill in the Blank**: Based on our understanding, we can fill in the blank with the term "chemical." Thus, the complete sentence will read: "All the portable toilets are chemical toilets."

### Final Answer:
All the portable toilets are **chemical** toilets.

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