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My brother works at a big school in Ho Chi Minh city . He is a(n) (5) …………… . Every day, he goes to work at 8 a.m and comes home at 5 p.m. He enjoys his work very much. In his free time, he learns (6) …………… the guitar. He also likes going fishing. But he’s not good (7) …………… fishing. And he doesn’t usually have enough free time to go fishing every weekend, either. He’s very (8) ……………

7.       A. in                       B. of                       C. at                       D. on