**Rule:** This is a First Conditional question. The 'if' clause uses the simple present ('doesn't work') to describe a future possibility. The main clause correctly uses the Simple Future ('will you do') to ask about the resulting action or plan. Options (a), (c), and (d) are grammatically incorrect in this structure.

**Rule:** The Future Perfect Continuous Tense (will have been + verb-ing) is used to emphasize the duration ('for six hours') of an action leading up to a specific point in the future ('By the time we reach the summit'). It focuses on the length of the continuous effort.

**Rule:** The Simple Future Tense ('will not' + base verb) is used to express a future intention or resolution. The speaker is stating their decision to delay making a choice. The time clause 'until we have all the facts' correctly uses the simple present. Option (d) is future perfect.

**Rule:** This sentence requires a future passive form because the 'building' cannot perform the action of pulling. 'Is going to be + past participle' is the passive form of the 'be going to' future, used for intentions or plans. The demolition is a planned event. Option (b) is active voice. Option (c) is simple present active voice. Option (d) is present perfect passive and refers to a past action.

**Rule:** The Simple Future with 'will' is used to state a future fact or an event that is certain to happen at a scheduled time. The law becoming effective is a formal, certain future event. Option (c) is also possible for schedules, but 'will become' is a very common and formal way to state this.

**Rule:** The Present Continuous Tense ('is/are' + verb-ing) is used for fixed future arrangements. A scheduled speech at a conference is a definite plan. Option (b) would be for a habitual action. Option (c) means the speech will be finished before next week. Option (d) is past tense.

**Rule:** The Simple Future with 'will' is used for a spontaneous decision made at the moment of speaking. The speaker realizes they are out of milk and decides to get some at that moment. Option (a) would imply they had a prior plan to go to the store, which isn't the case. Options (b) and (d) are incorrect.

**Rule:** The 'be going to' form is used for predictions based on clear present evidence. The current time (8:30) and the movie start time (9:00) provide the evidence that they are likely to be late. Option (a) 'will be' is also a prediction but 'going to' is stronger when there is immediate evidence. Options (b) and (d) are incorrect.

**Rule:** The Future Continuous Tense (will be + verb-ing) can be used to talk about a planned event in the future. It describes an activity that will be happening over a period of time at the book fair. It's a slightly more formal and descriptive alternative to 'is signing'. Option (c) is future perfect. Options (b) and (d) are incorrect.

**Rule:** The Simple Present Tense is used for events on a fixed schedule or program. An orientation is a scheduled event, making 'starts' the most appropriate and formal choice. Option (a) is also possible for arrangements, but simple present is standard for official schedules.