1. You must not talk during the film. 2. We forgot our tickets at home so we have to go back. 3. Jane missed the test

house.
8. They had to cancel the concert because of the bad weather.
9. I had to study all night for the exam, but I still feel unprepared.
10. The dog must have been hungry because it ate all its food in seconds.

1. The statement «You must not talk during the film» means that it is not allowed to speak or communicate in any way while watching the movie. This is usually a rule in cinemas or theaters to ensure that the audience can fully enjoy and concentrate on the film without distractions or disturbances.

2. The phrase «We forgot our tickets at home so we have to go back» means that the speaker and another person unintentionally left their tickets behind at their residence. As a result, they need to return to their home in order to retrieve the tickets before they can proceed with their plans or gain entry to the event or location where the tickets are required.

3. The sentence «Jane missed the test yesterday so she has to do it tomorrow» suggests that Jane was unable to take the test on the scheduled day, possibly due to absence or other reasons. As a consequence, she is required to make up for the missed test by taking it on the following day.

4. The statement «You must have been upset when you heard this news» implies that the person being addressed likely experienced feelings of sadness, disappointment, anger, or any other negative emotion upon learning the mentioned news. The word «must» indicates a strong assumption or inference made by the speaker about the emotional state of the individual.

5. The phrase «I’m sorry but Jack isn’t here. He had to leave about an hour ago» conveys the information that Jack is currently not present at the location. It is explained that he departed approximately one hour prior to the present moment, indicating that he is no longer available to interact or engage with others at that specific time.

6. The sentence «He’s got a problem with his stomach and he has to visit his doctor every week» describes a situation where an individual is experiencing a health issue related to their stomach. As a result, they need to visit their doctor on a weekly basis for medical attention and treatment.

7. The statement «You must not go shopping today. We’ve got enough food in the house» advises the listener against engaging in any shopping activities on the day in question. The reason provided is that there is an ample supply of food already present within the household, eliminating the necessity to acquire additional provisions.

8. The sentence «They had to cancel the concert because of the bad weather» explains that the planned concert was called off or postponed due to unfavorable weather conditions. This decision was likely made to ensure the safety and comfort of the attendees, as well as to maintain the overall quality of the event.

9. The phrase «I had to study all night for the exam, but I still feel unprepared» indicates that the speaker felt compelled or obligated to dedicate their entire night to studying in preparation for an upcoming exam. Despite this extensive effort, they express doubts or lack confidence in their level of readiness for the exam.

10. The sentence «The dog must have been hungry because it ate all its food in seconds» suggests that the mentioned dog likely experienced a state of hunger, as observed by the fact that it consumed all of its food within a very short period of time. The word «must» is used to convey a logical deduction or conclusion based on the observed behavior of the dog.