36. ............ have you been in London? – For three months. A. When B. How long C. How often D. Where 37. At the Alternative School, you ............ go to school every day. A. have not to B. not have to C. don’t have to D. haven’t to 38. At the moment, people ............ about the infection caused by a strange virus. A. worried B. are worried C. have been worriedD. be worried 39. Do you think Jane ............ discuss this problem with her parents first? A. have to B. need C. should D. must to 40. The couple next door ............ here after they got married. A. moved B. moves C. are moving D. move