Answer:
45. Who is the person that phoned you yesterday? 3. Phoned
46. It was very noisy next door. Our neighbors were having a party. 2. were having
47. Peter doesn't travel much these days. But, he used to travel a lot last year. 3. used to travel.
48. It is a nice day. I suggest we go for a walk. 1. suggest
49. Water boils at 100 degrees Celsius. 4. boils.
50. Drawing the map will be done at home by the students. 2. will be done
51. Ann will be able to run 100 meters much quicker after finishing her training camp in a few months time. 3. will be able to.