Answer :
The correct sentences for question 13 are 'Whose dog won Best in Show?' and 'Mark convinced himself that he was a winner.' For question 14, the correct sentences are 'By whom was this great chocolate cake made?' and 'The choir members raised their donation goal all by themselves.'
The correct answers must use the appropriate reflexive pronouns and demonstrative pronouns. For question 13, the two sentences that use the correct pronouns are:
- Whose dog won Best in Show?
- Mark convinced himself that he was a winner.
These sentences correctly use 'whose,' a possessive pronoun, and 'himself,' a reflexive pronoun. For question 14, the two sentences that use the correct pronouns are:
- By whom was this great chocolate cake made?
- The choir members raised their donation goal all by themselves.
'Whom' is correctly used as the object of the preposition, and 'themselves' is the correct reflexive pronoun.