How pleased the detective was _____ what his customer told him!
#98578
A
hearing
B
heard
C
to hearing
D
to hear
推荐题目
 Charles Babbage is generally considered ______ the first computer.
#97960
A
to invent  
B
inventing
C
to have invented
D
having invented
The question ______ last night was of great importance. 
#97848
A
discussed
B
discussing
C
to be discussed
D
discuss