21. He was late for the meeting \( \begin{array}{ll}\text { a) because } & \text { c) even though } \\ \text { b) so that } & \text { d) unless }\end{array} \) 22. She was happy \( \begin{array}{ll}\text { a) because } & \text { c) unless } \\ \text { b) although } & \text { d) since }\end{array} \) 23. We left early \( \begin{array}{ll}\text { a) because } & \text { c) even though } \\ \text { b) so that } & \text { d) unless }\end{array} \)

Sure, let's analyze each question and determine the most appropriate conjunction to complete the sentences. --- ### **21. He was late for the meeting** **Options:** - **a) because** - b) so that - c) even though - d) unless **Analysis:** - **a) because** is used to indicate the reason for something. - **b) so that** implies purpose. - **c) even though** introduces a contrast. - **d) unless** sets a condition. **Best Choice:** **a) because** *Example:* "He was late for the meeting **because** he missed the bus." --- ### **22. She was happy** **Options:** - **a) because** - b) although - c) unless - d) since **Analysis:** - **a) because** indicates the reason for her happiness. - **b) although** introduces a contrast. - **c) unless** sets a condition. - **d) since** can also indicate reason, similar to "because." **Best Choice:** **a) because** *Example:* "She was happy **because** she received good news." *Note:* Option **d) since** can also be correct in some contexts, e.g., "She was happy **since** she received good news." However, "because" is more straightforward and commonly used for expressing reasons. --- ### **23. We left early** **Options:** - a) because - **b) so that** - c) even though - d) unless **Analysis:** - **a) because** would indicate a reason for leaving early. - **b) so that** implies purpose or intention behind leaving early. - **c) even though** introduces a contrast. - **d) unless** sets a condition. **Best Choice:** **b) so that** *Example:* "We left early **so that** we could avoid the traffic." --- ### **Summary of Correct Answers:** - **21. a) because** - **22. a) because** - **23. b) so that** --- Feel free to reach out if you have more questions or need further explanations!