单选题 Those who want to be an editor of English Weekly must be ______ carefulness, patience and much knowledge of English.

【正确答案】 C
【答案解析】[考点] 词组辨析
[解析] make up of“构成,组成”;Own up“坦白,爽快承认”;be armed with“用……武装起来,装备有……的”;concentrate on“集中,全神贯注于”。