**Rule:** The 'be going to' form is used for predictions based on strong present evidence. The fact that 'he is stuck in a huge traffic jam' is the clear evidence that leads to the certain prediction that he will be late. Option (a) is a more general prediction, less connected to the immediate evidence.

**Rule:** The Simple Future with 'will' is used for making general predictions about the future, especially when they are considered facts or certainties. The statement is a general prediction about technology. Option (b) is also possible, but 'will' is very common for such factual predictions. Options (a) and (d) are incorrect.

**Rule:** The Present Continuous Tense ('is/are' + verb-ing) is used to talk about fixed plans or arrangements for the future. The phrase 'It is all arranged' confirms that this is a definite plan. Option (c) is for predictions. Option (b) is for timetables. Option (a) is incorrect.

**Rule:** This sentence requires the Future Perfect Passive voice (will have been + past participle) because the subject ('skyscraper') is the receiver of the action. The action of completing will be finished by a future deadline ('by the end of next year'). Option (a) is the future continuous active voice. Option (c) is the simple present passive voice. Option (d) is the simple present active voice.

**Rule:** The Future Perfect Passive voice (will have been + past participle) is needed here. The 'results' are the object of the action. The action of publishing will be completed by a future deadline ('by the end of the month'). Option (c) is active voice. Options (a) and (d) are incorrect.

**Rule:** In conditional clauses starting with 'unless' (or 'if'), the Simple Present Tense is used to refer to the future condition. The main clause uses a future tense ('the situation will get worse'). Using 'will' in the 'unless' clause is a common grammatical error. Option (d) is past tense.

**Rule:** The Simple Present Tense is the most standard and formal tense for events on a fixed public timetable, such as train departures. While other future forms like (a) and (d) are common in speech, (c) is the technically correct form for a schedule.

**Rule:** The Future Perfect Continuous Tense (will have been + verb-ing) is required to emphasize the duration ('for six months') of an action leading up to a specific future event ('by the time the race starts'). It highlights the long period of preparation. Option (b) doesn't convey the duration. Options (a) and (c) are incorrect.

**Rule:** To ask a question about whether an action will be completed by a specific future time, the interrogative form of the Future Perfect Tense is used. 'By the deadline' indicates the need to check for completion. Option (b) asks if the action will be in progress. Options (c) and (d) are present tenses.

**Rule:** The sentence contains a future time clause ('When their new album is released'). The main clause must describe the subsequent future event. The Simple Future ('will go') is the most appropriate tense to state the planned action that will follow the album release. Option (b) is also possible for plans.