Question

Identify the grammatically correct sentence.

• A. Rich grow richer and poor grow poorest.
• B. Look! The old man is walking across the road.
• C. If she doesn't take a taxi, she missed the train.
• D. She takes coffee, does she?

Hint:

Words such as Look!, Listen!, Now, and At present generally require the Present Continuous Tense.

Answer 1

The Correct Option is B

Concept: To identify the grammatically correct sentence, we must check:
• Subject--verb agreement.
• Correct tense usage.
• Proper comparative forms.
• Correct question tags.

Step 1: Examine Option (A).
\[ \text{Rich grow richer and poor grow poorest.} \] This sentence is incorrect because the comparative structure should be: \[ \boxed{\text{The rich grow richer and the poor grow poorer.}} \] "Poorest" is a superlative and is incorrect here.

Step 2: Examine Option (B).
\[ \text{Look! The old man is walking across the road.} \] The word Look! indicates an action happening at the moment of speaking. Therefore, the Present Continuous Tense: \[ \boxed{\text{is walking}} \] is correctly used.

Step 3: Examine Option (C).
\[ \text{If she doesn't take a taxi, she missed the train.} \] The tenses are inconsistent. The correct sentence would be: \[ \text{If she doesn't take a taxi, she will miss the train.} \] or \[ \text{If she hadn't taken a taxi, she would have missed the train.} \]

Step 4: Examine Option (D).
\[ \text{She takes coffee, does she?} \] The question tag is incorrect. Since the statement is affirmative, the tag should be negative: \[ \boxed{\text{doesn't she?}} \]

Step 5: Final conclusion.
Therefore, the only grammatically correct sentence is: \[ \boxed{\text{Look! The old man is walking across the road.}} \]