We ...... a lot important scientific discoveries in 2050. a. have b. will have c. had d. has had . We ......... for our cars. a. is looking b. have been looking c. are looking d. is going to look. 210. What is your purpose ........... learning English? a. of b. to c. for d. on . There are more and more people died ...... AIDS. a. on b. from c. at d. of . Something went wrong ........ my computer yesterday. a. on b. with c. at d. for . Tobacco has bad effects ......... our health. a. on b. from c. at d. of I am looking forward ........... seeing you. a. to b. for c. on d. at Please pay attention ..... the lecture. a. on b. to c. about d. with I have known her .......... last year. a. for b. since c. from d. at