【题目】Eating well and good exercise ________ you free ________ cold.
A.keeps; for
B.keep; of
C.stops; from
D.prevent; from

【答案】B
【解析】keep sb.free of/from (doing) sth.意为“使某人免除/摆脱(做)某事”；stop/prevent sb. from(doing) sth.“防止某人(做)某事”。句意：吃好锻炼好使你不感冒。故选B。