Customers can return the product _______ 30 days of purchase. A. during B. within C. between D. at

The company is seeking a candidate _______ experience in both marketing and data analysis. A. who B. that C. having D. had

The man _______ we met at the conference works for a famous tech company. A. which B. whom C. who D. whose

The office space was redesigned _______ improve workflow and communication among employees. A. in order to B. so that C. despite D. for

The manager will not approve the budget proposal _______ all the figures have been verified. A. until B. while C. since D. once

The more frequently employees use the new system, _______ they become with its features. A. the more familiar B. more familiar C. the most familiar D. most familiar

The manager, _______ office is on the top floor, will join us soon. A. who B. whose C. whom D. which

The technician, _______ was supposed to inspect the machines this morning, hasn’t arrived yet. A. that B. who C. which D. whose

_______ he had submitted the report earlier, the meeting could have been scheduled sooner. A. If B. Unless C. Although D. Even though

The assistant reminded the manager to check the report before sending it, _______ it contained minor errors. A. even though B. unless C. in case D. provided that

The CEO spoke so persuasively _______ even the skeptical investors decided to support the plan. A. as B. since C. that D. although

The new intern performed _______ than anyone had anticipated. A. more efficiently B. most efficient C. more efficient D. most efficiently

_______ he had enough money, he decided not to buy the car. A. Because B. Although C. Unless D. Despite