Choose the correct word or phrase to complete each sentence. 1 i am not very fond to do / of doing tests. 2 jessica has really looking forward to go / to going back to school. 3 my dad helped me with / for this composition. 4 pedro has not very good at / in learning new vocabulary. 5 all the students are able of writing / to write letters to their pen friends. 6 are you beginning to understand / understending the difference between past simple and past continuous?