Instruction
Select the best answer to complete the sentence.
1. I bumped -------- my old classmate on the street.
2. Our company specializes -------- producing speakers for car audio systems.
3. I couldn’t help -------- at his jokes.
4. ------- for his effort, our project would not have been completed.
5. In this company, there are many employees, some of ------- are freshmen.
Your score is
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