问题补充：
She had to from school for a week to take care of her sick mother in hospital.
A. keep away
B. leave away
C. stay away
D. take away
答案：
A. keep away
B. leave away
(答案→)C. stay away
D. take away
解析：短语辨析。 A.防范，不解近；B. 忽略；C.外出，不在家；D. 带走，拿走。句意：她有一个星期不再学校，去在医院照顾她生病的母亲。故选C。
