Вставьте нужное прошедшее время (Past Simple, PastContinuous, PastPerfect, PastPerfect Continuous). По возможности прошу объяснить, почему вы выбрали именно это время:
1) In June I (sit) my exams and (have) practically no free time.
2) In December I (lie) in bed with pneumonia for three weeks.
3) I (have) a breakfast and (not hear) your call. I'm sorry. I hope it (not be) something urgent.

1) In June I was sitting my exams and had practically no free time.2) In December I had been lying in bed with pneumonia for three weeks.3) I was having a breakfast and didn't hear your call. I'm sorry. I hope it wasn't something urgent.