No. 1 David has been a member of a special research group in our laboratory ------- over fifteen years. (A) since (B) for (C) in (D) from No. 2 After the unexpected death of the CEO, the board of directors ------- a meeting at 10 p.m. (A) calling (B) was called (C) called (D) has called No. 3 Dada Motors's ------- for participation in the study of mobility in the aging society is still under discussion. (A) responsibility (B) accountability (C) disability (D) eligibility No. 4 The manager emphasized that we had to focus on understanding changing customer -------. (A) needing (B) needed (C) needy (D) needs No. 5 The local business became profitable enough ------- new branches in nearby towns. (A) to open (B) opening (C) open (D) opened No. 6 The company purchased a new photocopier because the previous model was -------. (A) outnumbered (B) outdated (C) outgoing (D) outward No. 7 Mr. Keith is thinking about ------- a hotel online for his next trip. (A) staying (B) booking (C) going to (D) serving No. 8 It is wrongly accused that the U.S. top universities have a ------- to accept more racial minorities. (A) tendency (B) tenderness (C) temper (D) tension No. 9 The trend for retail stores these days is to ------- an online presence. (A) being (B) be (C) have (D) has No. 10 This warranty guarantees that the maker will, without charge, repair or ------- defective parts. (A) replaced (B) replacing (C) replace (D) replaces