请根据录音组句子，将右栏的选项填入左栏相对应的题前括号内。每小题读三遍。（10%）
He can ____ Chinese. A. say B. tell C. speak
I ___ a robot. A. has B. have C. having
____ are hard-working. A. They B. Is C. Am
____ they helpful at home? A. Am B. Is C. Are
Chen Jie ____ polite. A. am B. is C. are
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