Interchange of Sentences

The book is so heavy that I cannot carry it.

Step 1: 'Too + adjective + to + verb' structure expresses impossibility or difficulty. Step 2: 'So...that' structure needs to express the same meaning of impossibility. Step 3: Replace 'too' with 'so' and add 'that' followed by a negative clause. Step 4: 'Cannot/could not' maintains the meaning of impossibility from 'too...to'. Step 5: Option B changes meaning to possibility, C is incomplete, and D has incorrect grammar.

No sooner had the rain stopped than children went out to play.

The pattern for 'no sooner...than' uses 'had' + past participle in the first clause, followed by 'than' and the main clause. Here, 'stopped' is the past participle, so 'had the rain stopped' is correct. The second clause keeps the simple past form: 'children went out to play.'

Although it rained heavily, the match continued.

Step 1: 'Despite' is followed by a noun phrase, while 'Although' is followed by a complete clause. Step 2: Convert the noun phrase 'heavy rain' into a clause with subject and verb. Step 3: 'It rained heavily' is the most natural way to express the action. Step 4: Option B lacks a verb, making it grammatically incorrect. Step 5: Options C and D are grammatically correct but less natural than the standard 'it rained heavily' construction.

Let's go to the park, shall we?

Step 1: 'Let's' is a contraction of 'let us' and is used for suggestions. Step 2: For suggestions starting with 'Let's', the question tag is always 'shall we?'. Step 3: This is a fixed rule in English grammar for imperative sentences with 'let's'. Step 4: 'Will we?' is used with future tense statements, not suggestions. Step 5: 'Don't we?' and 'aren't we?' don't match the imperative nature of 'let's'.