Topic: Group verb,

Best Answer Explained in Below-:

In the context of the sentence "We want to --- the house, but it wasn’t suitable," the phrase "look over" is the most appropriate choice among the options provided.

"Look over" typically means to examine or inspect something carefully. In this case, it implies that the intention was to assess the house's condition, layout, or overall suitability for the intended purpose, such as buying or renting. The consequent clause, "but it wasn’t suitable," indicates that after this inspection, the conclusion was reached that the house did not meet their criteria or preferences.

The other options do not fit well within this context:

- "Look on" generally means to observe from a distance and doesn't imply any detailed evaluation.
- "Look through" suggests a superficial or brief examination, which again lacks the thoroughness implied by needing to decide on suitability.
- "Look for" means to search for or seek out something, which does not align with the act of assessing a specific house already in consideration.

Thus, "look over" effectively captures the intention of evaluating the house, making it the correct choice in this context.