**Rule:** The Future Perfect Tense (will have + past participle) is used to mark the completion of a duration ('for a year') by a specific future time ('next month'). It emphasizes the milestone being reached. Option (b) 'will be' is grammatically correct but does not carry the same meaning of a completed duration; it simply states their marital status next month.

**Rule:** The Future Perfect Tense (will have + past participle) is used to describe an action that will be completed by a specific future time. 'By the end of the year' is the future deadline by which the action of spending all savings will be complete. Option (c) 'will be spending' implies the action will be ongoing, not finished. Options (b) and (d) are incorrect tenses.

**Rule:** The 'be going to' future is used to express a plan or intention. The structure is 'be going to + base form of the verb'. The team has a plan to develop a strategy. Option (a) incorrectly uses the '-ing' form after 'to'. Option (b) incorrectly uses the base form after 'will be'. Option (d) is simple present.

**Rule:** The 'be going to' form is used to express a future intention or plan. Although she is still thinking, the intention exists. Option (a) 'will apply' would be more of a prediction or a spontaneous decision, which doesn't fit the context of 'still thinking'. Options (b) and (d) are incorrect.

**Rule:** This sentence contains a future time clause ('after he has consulted'). The main clause must be in a future tense to describe the subsequent action. The Simple Future ('will make') is the correct choice to state the future intention. The time clause correctly uses the present perfect ('has consulted') to emphasize completion before the main action.

**Rule:** Modal verbs like 'might', 'may', or 'could' are used to express future possibility or uncertainty. The phrase 'I'm not sure' clearly indicates uncertainty, making 'might' the most appropriate choice. Option (b) 'am going to' implies a definite plan, which contradicts the first part of the sentence.

**Rule:** The structure 'will have to + base verb' is used to express future obligation or necessity. The sentence implies a requirement for him to submit the report by a deadline. Option (c) 'will have submitted' states that the action will be complete, but doesn't convey the sense of obligation. Options (a) and (d) are incorrect tenses.

**Rule:** The Future Perfect Tense (will have + past participle) is used to express that a future action will be completed before another future event. The action of choosing the movie will be finished by the time the pizza arrives. Option (b) implies they will still be in the process of choosing.

**Rule:** The Present Continuous Tense ('is/are' + verb-ing) is used for fixed future plans and arrangements, especially for scheduled events like sports matches. It indicates that the event is definitely happening. Option (a) is also possible for schedules, but (c) is very common. Option (b) is future perfect.

**Rule:** The 'be going to' future is used to make a prediction based on present evidence. The children's excitement is the current evidence that leads to the prediction about their future action (or intention) of waiting. Option (d) is a more general prediction, less connected to their current state.