1. British cavers have made some important ............. about Son Doong Cave ( DISCOVER ) 2. More and more foreigners like travelling to Viet Nam for holiday because things are ............. here ( AFFORD ) 3. In Viet Nam , spring rolls are ................ dish often made on Tet holidays and some special occasions ( TRADITION ) 4. My mom is making a prawn salad , which is a ............ of my sister and me ( FAVOUR ) 5. To become a skilled repairman , you need some special vocational .............. (TRAIN ) 6. We will be responsible for ous studies , so our teacher won't have to check ............. ( ATTEND ) 7. Teachers should act as ............... , enabling their students to study in the way that suits them best( FACILITATE ) 8. He had been an ............. salesman before he decided to set up his own business ( EXPERIENCE )