Complete the sentences with the correct prepositions. 1) He is very loyal _____ his friends/ 2) Do you feel optimistic

1) He is very loyal to his friends. 2) Do you feel optimistic about the future? 3) Where\'re all very proud of you. 4) I\'m feeling really annoyed with my brother. 5) She isn\'t very good at chess. 6) Are you afraid of spiders? 7) They aren\'t accustomed to the climate. 8) I\'m tired of waiting. 9) Who is responsible for this mess? 10) She\'s very depressed because of her exam results.