Answer:
2. Please, give your father a call.
3. Please, buy her a printer.
4. Please, write me a check.
Explanation:
To make requests, we can simply use the imperative mood. To form a sentence in the imperative mood, we use the base form of the verb without "to". No subject should be added before the verb, since it is implied that the sentence refers to the second person (you). For example:
Bring me that newspaper.
However, imperative sentences often sound a bit rude. To make them more polite, we can use "please":
Please, bring me that newspaper.
Bring me that newspaper, please.