问题
选择题
Having lived in China for 8 years, Helen has a good ______ of both English and Chinese．
A．program
B．guidance
C．command
D．ability
答案
答案：C
短语have a good commang of 掌握，运用能力。 在中国生活了八年海伦对英语和汉语都掌握很好。 选C
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