There was a _____ look on his face. He f
题型:选择题
问题:
There was a _____ look on his face. He found what the expert said too difficult to understand.
A.puzzle
B.puzzling
C.puzzled
D.to puzzle
There was a _____ look on his face. He found what the expert said too difficult to understand.
A.puzzle
B.puzzling
C.puzzled
D.to puzzle