The direct object is animals.
You ask, 'zoologists study what?'; the answer, 'they study animals'.
The verb does not have a direct object in the sentence, "She is insecure."
There is no direct object in that sentence.
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.
It kind of depends on the sentence, but typically it will be a direct object, because indirect objects are usually people or animals.
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."
Animals because it's after the verb!
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.