Correct Answer: D

Rationale: The correct answer is 'D' - 'although.' This transition word is suitable in the context as it indicates a contrast between the excitement of looking forward to the picnic and the worry about rain. 'After all' (choice A) implies a conclusion or reasoning, which doesn't fit the contrast in the sentence. 'Likewise' (choice B) suggests similarity or agreement, which is opposite to the intended contrast. 'In other words' (choice C) signals clarification or providing more details, which is not needed here. Therefore, 'although' is the best choice to convey the contrast between anticipation and concern.

Correct Answer: C

Rationale: The correct answer is 'But.' In this sentence, the conjunction 'but' is used to show a contrast between the usual routine of taking a walk after breakfast and the fact that it was raining today. 'While' suggests a concurrent action, 'Because' implies causation, and 'When' introduces a time relationship, none of which are suitable in this context.

Correct Answer: A

Rationale: The correct answer is A because it uses a comma to separate the day of the week from the date, as well as a comma after the month when the date is included in a sentence. In choice B, there should be commas after both the day of the week and the date. Choice C correctly uses commas after the day of the week and the date. Choice D incorrectly places the comma before the date instead of after the month.

Correct Answer: B

Rationale: The correct plural form of 'chair' is 'chairs,' following the regular pluralization rule by adding 's.' Choices C and D, 'Chaires' and 'Chairies,' are incorrect because they do not follow the standard English pluralization rule. Choice A, 'Chair,' is the singular form and not the plural form of the word.

Correct Answer: C

Rationale: The correct answer is C because 'hang out' and 'chill' are colloquialisms, informal expressions commonly used in casual conversations. Choice A is a polite and formal way to ask for a meeting, devoid of colloquial language. Choice B is a straightforward expression of enjoyment without any colloquialisms. Choice D is a polite and formal statement that does not contain any colloquial language.