Ребята объясните почему тут ответ B (Да и вообще объясните как мне различать , где будет Past tense , а где будет Present Perfect or Past perfect?) Просто забыла полностью все правила , вот теперь и мучаюсь..
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49. Hardly had I got home when it started to rain.

When we use negative adverbs such as Hardly, rarely, seldom, never, etc at the beginning of a sentence, we must follow this structure:

negative adverb + auxiliary verb (does,do,have,has,had,...) + subject

Past simple:

It is used with finished actions. We can recognise it easily when we see time expressions such as yesterday, last week, one year ago, when I was a child, at that moment, that day, one day, etc.

Present perfect:

-It is used to say that an action happened at an unspecified time before now. We can recognise it easily when we see time expressions such as already, yet, never, ever, just, etc.

Subject + have/has + participle

Past perfect:

-It is used to say that one event happened before another in the past.

Subject + had + participle