Generally speaking，friends have in each other.
A. much；mon with
B. little；mon to
C. many；mon with
D. much；similar to
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(答案→)A. much；mon with
B. little；mon to
C. many；mon with
D. much；similar to
解析：A解析：have much in mon with sb与某人有许多共同点；have little|n mon with sb与某人几乎没有共同点。
【知识拓展】注意in mon with sb意为“与某人一样”。