Reflexive pronouns: แบบฝึกหัด

Which reflexive pronoun correctly completes this sentence?
"The little kitten is cleaning _________ with its tongue."

Fill in the blank:
"We didn't have any help from our parents; we built the treehouse _________."

"Guests, please help ____ to the refreshments on the table," said the host.

I was so hungry that I made ____ a large sandwich for lunch.

Peter, did you fix the broken chair all by ____, or did someone help you?

Fill in the blank with the correct reflexive pronoun: "He painted the entire room _______ without any help from his friends."

Fill in the blank with the correct reflexive pronoun: "The children enjoyed _______ very much while playing at the park last Sunday."

Correct the error in the following sentence: "She was so proud of her exam results that she bought her a new smartphone as a gift." (The subject and object refer to the same person).