. You should learn how to cook. (TIME) 42. I regret reading the letter. (ONLY) 43. She started doing her homework as soon as her brother had left for school. (UNTIL) 44. I haven’t been to the cinema for two months. (TIME) 45. Daisy finds it easy to read the map. (DIFFICULTY) 46. He delayed writing the book until he had done a lot of research. (START) 47. It was unnecessary for the teacher to buy so much laboratory equipment as she did. (NEEDN’T) 48. She made a tremendous effort to win the gold medal in the competition. (FOR) 49. It is said that the IS militants took control of Kobani. (HAVE) 50. If things go wrong whatever you do, do not panic. (HEAD