9.The boy’s trousers are__________and need washing.
A. tidy
B. dirty
C. neat
D. worn
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10.They__________on helping us with the job.
A. persisted
B. stuck
C. insisted
D. adhered
11.Because her actions__________her family name, she was driven out of her family.
A. damaged
B. polluted
C. soiled
D. hurt
12.Shanghai is a technologically__________city in China.
A. approved
B. advised
C. advertised
D. advanced
13.Because of her__________in English, she got a good job after graduation.
A. skillful
B. knowledge
C. proficiency
D. master