Question 43: The correct answer is D. "Had they brought their IDs, they would have been able to get into the club." Question 44: The correct answer is C. "Not until Tom made a significant profit did he invest all his savings in the stock market." Question 45: The underlined part that needs correction is B. It should be "their" instead of "his." So the corrected sentence is: "The couple celebrated their anniversary with a romantic dinner at their favorite restaurant." Question 46: The underlined part that needs correction is C. It should be "complemented" instead of "complimented." So the corrected sentence is: "The soft music in the background complemented the intimate atmosphere of the restaurant." Question 47: The underlined part that needs correction is A. It should be "attended" instead of "attends." So the corrected sentence is: "Last week, she attended a conference and networked with professionals in her field." Question 48: The closest meaning to the given sentence is A. "Emily must have misplaced her keys." Question 49: The closest meaning to the given sentence is C. "John has been living in New York for more than three months." Question 50: The correct answer is B. "The HR manager ordered the employees to follow the dress code."