Letter is the direct object.
The direct object in the sentence is "letter." It is the recipient of the action performed by the subject "Leo."
The verb does not have a direct object in the sentence, "She is insecure."
There is no direct object in that sentence.
The direct object in the sentence "His father walks with a limp" is "a limp."
There is no direct object in that sentence.
There is no direct object in this sentence.
In the sentence 'you have her a surprise gift', 'her' is an indirect object. 'Gift' is the direct object in that sentence.
Yes, and very often. Example: "This sentence has a direct object." where object is the D.O.
That sentence does not contain a direct object.
"song" is the direct object in that sentence.
Personality is the direct object in that sentence.
In grammar, technique can serve as either a direct object or an indirect object, depending on how it is used in a sentence. For example, in the sentence "She taught me a new technique," "me" is the indirect object and "a new technique" is the direct object.