Are those your pen friends? Yes, .A. they areB. they’reC. they are notD. they

Are those your pen friends? Yes, .
A. they are
B. they’re
C. they are not
D. they

(答案→)A. they areB. they’reC. they are notD. they解析：回答中是Yes，故排除C。而D选项中没有be动词，排除。在回答一般疑问句时，they are 不能缩写，排除B。只有A是正确的。故选A

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