1.Look at the sky, I think it (rain). 2.In winter I (go) to the gym every day.
3.Jessica has got a new job in Moscow! She (move) there in the next month.
4.Mother can’t take me to school. She (have) an appointment at the dentist’s at 9:00.
5.My brother (not be) like this again, he promised.
6.Her friend has broken his leg. She (visit) him at hospital.
7.Mike and Boris (to have) a party. I think it (be) a very nice party.
8.I have already bought the tickets. They (leave) for Saint-Petersburg tonight.
To determine the correct tense for this sentence, we need to consider that the speaker is looking at the sky in the present moment and forming an opinion about the weather. Therefore, we use the present continuous tense "is raining" to indicate an action happening at the current moment.
2. In winter, I go to the gym every day.
Since this is a general statement about the speaker's routine in winter, we use the simple present tense "go" to denote a habitual action or a fact.
3. Jessica has got a new job in Moscow! She will move there in the next month.
To express a future action that has already been planned and arranged, we use the future simple tense. In this case, Jessica's move to Moscow is planned to happen in the next month, so we say "she will move" to indicate a future action.
4. Mother can't take me to school. She has an appointment at the dentist's at 9:00.
Here, we use the present simple tense "has" to indicate a scheduled appointment that is happening in the present or near future. It expresses a fact or a situation that is true at the moment of speaking.
5. My brother will not be like this again, he promised.
For a future action that is promised or planned by someone, we use the future simple tense. In this case, the brother promised that he will not be the same again in the future.
6. Her friend has broken his leg. She will visit him at the hospital.
In this sentence, we use the present perfect tense "has broken" to show an action that happened in the past and has a result in the present. The speaker is stating that the friend broke his leg, and as a result, she will visit him in the hospital in the future.
7. Mike and Boris are having a party. I think it will be a very nice party.
Since the speaker is talking about a current action that is happening at the moment, we use the present continuous tense "are having" to express that Mike and Boris are currently having a party. Additionally, for a future prediction about the quality of the party, we use the future simple tense "will be" to express the speaker's opinion.
8. I have already bought the tickets. They are leaving for Saint-Petersburg tonight.
The speaker uses the present perfect tense "have already bought" to indicate an action that was completed in the past with a result or connection to the present. The result is that the speaker now has the tickets. Additionally, the speaker uses the present continuous tense "are leaving" to express a future action that has been planned and arranged by the subject.
These detailed explanations and step-by-step solutions should help you understand the grammar and reasoning behind each answer. Let me know if you need further clarification or assistance.