Choose the best answer A, B, C or D to complete the sentence. Question 11: Air pollution, together with littering has _______many problems in our big cities today. A: caused B: affected C: bought D: made 13 Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 13. “Would you pick the kids up from school this afternoon?” “__________” A: Sure B: I don’t think so. C: Really? D: No, I am afraid I can’t. 14 Choose the word whose stressed pattern is pronounced differently from the others . A: improve B: support C: educate D: invent