Put the word in the right place in the sentence.

The correct sentence is: "Ben didn't call his friends yesterday." Explanation: 1. **Subject:** The sentence is about someone not calling, and that someone is "Ben". So, "Ben" is the subject of the sentence and should go first. 2. **Verb Phrase:** The action is "didn't call". This is a negative past tense action, and it should follow the subject. 3. **Object:** The action "didn't call" needs an object, which is "his friends", so "his friends" should be after "didn't call". 4. **Time:** Finally, the time when this action happened is "yesterday". 5. **Punctuation:** The sentence ends with a period. Therefore, the correct order is: Ben + didn't call + his friends + yesterday + . (period).