Answer :
Let's go through each multiple-choice question one by one and find the correct answers:
Her grandparents got married in 1950.
- The correct answer is a) in, because we use 'in' to refer to years.
-How long ____ here? -I only arrived half an hour ago.
- The correct answer is d) have you been, as it uses the present perfect tense to inquire about the duration of a current situation.
She ____ the bus for two hours, but it didn't come. So she walked home.
- The correct answer is a) waited for, because 'waited for' means spending time until a desired event occurs, in this case, the bus arrival.
He ate all his chocolates, and then he also ate ____
- The correct answer is a) mine, which is the correct possessive pronoun used to indicate 'my chocolates'.
She was very surprised when ____ the news.
- The correct answer is c) she heard, because 'heard' is the simple past tense suitable for a completed action in the past.
You've been sleepy all day. What time ____ to bed last night?
- The correct answer is c) did you go, since it uses the simple past tense to ask about a completed action.
What time are you going ____
- The correct answer is b) home, because 'home' is often used without a preposition.
If you ____ your examinations, your father will be very angry.
- The correct answer is c) don't pass, a negative form using the present simple tense to express a future condition.
He likes ____ especially Chrasti.
- The correct answer is d) Italian wine a lot, as it correctly structures the sentence to express preference.
Our sales manager flew to Tokyo ____ the head of the company.
- The correct answer is d) for a meeting, because it's the correct prepositional phrase to express purpose here.
She is studying ____ for her examinations.
- The correct answer is d) really hard, which is correct as 'really' intensifies the adjective 'hard', meaning with great effort.
It was the middle of winter, so there were ____ people on the beach.
- The correct answer is b) few, as 'few' indicates a small number, suitable for countable nouns like 'people'.
I hope this detailed explanation helps you understand the rules and concepts behind each correct answer!