Choose the most appropriate preposition for the given sentence. I have ordered…

Correct answer: No preposition.

Key point: The verb "order" in this sentence is transitive and takes a direct object. That means the object (a T-shirt) follows the verb without a preposition.

• Complete sentence: I have ordered a T-shirt.

• When to use a preposition: Use a preposition only if you add more information, for example a beneficiary: 'I have ordered a T-shirt for my friend.'

Why the other choices are incorrect:

• 'for' would be used to indicate the recipient or purpose (e.g., 'ordered a T-shirt for my friend'), but it is not used between the verb and its direct object in the sentence as given.

• 'of' expresses possession, relation, or origin and does not fit the verb–object relationship here.

• 'with' indicates accompaniment or instrument and is not used to link the verb 'ordered' to its object in this context.

Short rule: If a verb directly takes the thing acted on, do not insert a preposition; use one only to add additional information (e.g., beneficiary, instrument, location).