There was a _____ look on his face. He found what the expert said too difficult to understand.
#95567
A
puzzle
B
puzzling
C
puzzled
D
to puzzle
推荐题目
My boss command me ____ the same mistake again or I would be fired. 
#90445
A
not to make
B
not make
C
don’t make
D
to not make
 I think this story is _____ .
#97542
A
worth being read
B
worth reading
C
worth to read
D
worth of reading
We found the baby  ____ on the floor.      
#95880
A
slept
B
sleep
C
to sleep
D
sleeping