Select the most appropriate idiomatic expression that can substitute the underlined segment in the given sentence.
He is very strict with his students but good-natured.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. his heart is in the right place.
The idiomatic expression "his heart is in the right place" is most appropriate to describe someone strict with students but good-natured.
This idiom conveys that, despite their stern approach, the person has genuine good intentions and a kind nature.
The other idioms are not suitable: "his eyes are bigger than his stomach" refers to overreaching desires, "he has a big mouth" means someone who talks too much, and "his heart misses a beat" relates to sudden emotional reactions, none of which fit the context of being strict yet well-meaning.