The sentence describes a general truth or fact about water and temperature. In this context, we use the present simple tense to indicate something that is universally true. The correct form to complete the sentence is "Water freezes at a temperature of zero degrees Celsius." This construction correctly states a fact about water's freezing point. Therefore, option D, "freezes," is the grammatically correct choice.
The sentence is discussing a future event (traveling to Mars), which requires the future tense. The future tense form for the third-person plural (men and women) is "will travel." Therefore, the correct and grammatically correct sentence is: "Some day men and women will travel to Mars." This form correctly indicates the future action of traveling to Mars.
The sentence structure requires a temporal conjunction to indicate the sequence of events. "After" is used to show that one action (washing the sweater) occurred before another action (hanging it up to dry). Therefore, the sentence "After washing her sweater, Mary hung it up to dry." is grammatically correct and conveys the sequence of events in the correct order.
This is the past tense form of the verb "do." It's correct to form a simple past tense question, which is what the sentence "Did you get a new haircut?" is asking. It's asking about a specific action (getting a haircut) that occurred in the past.
This option effectively combines the two sentences by clearly stating the reason for putting chains on the tires, which is because the road was slippery. This option maintains the logical flow of cause (slippery road) leading to effect (putting chains on the tires), and it's grammatically correct and clear.
This option correctly combines the sentences using "both" to indicate that both Lisa and Kelly play the piano. It's clear and grammatically correct.
It correctly places emphasis on the puppy's action first ("ran into the street after a cat"), followed by the owner's immediate response ("quickly went to retrieve the puppy"). This option keeps the chronological order intact and is grammatically correct.
