1.when someone ________ (创作) a piece of music, he/she writes it. 2.the player was given hardly any opportunities to show off his ________ (才华). 3.he became my best friend and ________ (影响) me deeply. 4.he ________ (record) everything that happened during his travel. 5.if two or more substances ________ (混合), they combine and become a single substance. 6.the film's plot was so ________ (复杂的) that i couldn't follow it.