English Grammar and Usage

 For 'tommorow' we use 'the following day'. Modal 'must' will remain unchanged. 

Case of exclamatory sentence (so, 'exclaimed with joy' should be used in case of happiness). Generally, to change the narration (from direct to indirect), if the reported verb is in the past tense and the reported speech is in the past simple tense, we change the reported speech into past perfect tense. Subject 'I' becomes 'he'.

The original phrase 'six months later' is grammatically correct and idiomatic in this context. The other options introduce unnecessary wordiness or awkward phrasing.

The phrasal verb 'turned up' is the correct synonym for 'arrived' in the context of people attending an event.

The sentence uses a positive statement, so the tag question must be negative. Since the subject is 'that dress' (it), the tag is 'isn't it'.

In negative sentences, 'either' is used at the end of a clause to indicate that someone else is also not doing something. 'Too' is used for positive statements.

'Two weeks ago' is the standard idiomatic expression to indicate a point in time in the past relative to the present.

'None of' should be followed by singular verb 'has' and not plural verb 'have'.

It is a dangling sentence as 'has not' is not complete. The correct sentence should be 'has not filed and....'.

‘Have a good day’ is the correct answer. It is the short way of saying, “I wish you have a good day.”

The correct phrase is 'wondered who it belonged to'.

The phrase 'laden with' is the standard idiomatic expression used to describe something that is heavily loaded or filled with something else.

The correct idiomatic expression is to be on good terms with someone. The other prepositions like in, into, or to are grammatically incorrect in this context.

In English, the verb 'fit' when referring to the size of clothing does not require a preposition like 'in', 'on', or 'to' when the object is the person wearing it.