问题补充：
Alice to see his aunt if she free tomorrow.
A. will come; will be
B. come; is
C. will come ;is
D. comes ;will be
答案：
A. will come; will be
B. come; is
(答案→)C. will come ;is
D. comes ;will be
解析：句意:如果她明天有空,爱丽丝会来看她的姑姑.结合语境可知本句主句描述的是将来的动作,故用一般将来时态,当英语主句描述将来动作时,条件状语从句中用一般现在时态表示将来动作.结合语境可知选C.
