问题补充:
Half of her time in the library.
A. spends on books
B. is spent reading books
C. has paid for reading books
D. is spending to read
答案:
A. spends on books
(答案→)B. is spent reading books
C. has paid for reading books
D. is spending to read
解析:句意:她的一半的时间都是花在在图书馆读书上。结合语境可知本句描述的是客观性动作,故用一般现在时态。主语是动作的对象,故用被动语态,选B。