Explanation

The correct sentence is: “Rustam fell down the stairs and broke his leg.”

“Down” indicates movement from a higher to a lower position.

Explanation

The correct sentence is: “The swimmers dived into the water from a height of 100 ft.”

“From” indicates the starting point of the dive.

Explanation

The correct sentence is: “Compare your answers with your partner.”

“With” is used to indicate comparison between two things or people.

Explanation

The correct sentence is: “Give an opinion about a beautiful place in Pakistan.”

“About” is used to indicate the subject or topic of the opinion.

Explanation

The correct phrase is: “Turn by turn, each student should make an outline of an essay.”

“By” is used to indicate alternating or sequential action.

Explanation

The correct sentence is: “The houses will be built soon.”

“Will be built” correctly indicates a future passive action.

Explanation

The correct sentence is: “Our car is very old, but its engine is in good condition.”

“But” shows a contrast between the car being old and the engine being good.

Explanation

Explanation

The correct sentence is: “The baby cannot walk, but it can crawl very fast.”

“But” is used to show contrast between walking and crawling.

Explanation

The correct sentence is: “I love gardening, and I can grow my own fresh vegetables.”

“Gardening” correctly refers to the activity or hobby, not just the garden itself.