解放军文职考试：非谓语动词经典例题

— What do you think of the book?    
— Oh, excellent.  It"s worth _____ a second time.    
[     ]
A. to read    
B. to be read  
C. reading    
D. being read
答案 : C
The library needs____, but it"ll have to wait untilSunday.    
[     ]
A. cleaning    
B. be cleaned    
C. clean    
D. being cleaned
答案 : A