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Question 105: If the patient’s nasal problem does not show signs of improvement _____ two days, he should visit the clinic again.
Question 106: Those giving demonstrations at the department store _____ explained the product’s features and benefits.
Question 107: Because its latest exhibit is highly valuable, the Gabe Gallery took more precautions than it _____ did in the past.
Question 108: _____ making structural changes to a house must first apply for a building permit.
Question 109: Employees who attend the workshop on improving communication skills will be given a certificate of _____ by the instructor.
Question 110: _____ its distinguished faculty in the science department, the university has state-of-the-art laboratory facilities.