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
________ deep down in the earth for thousands of years, the dead forest has rotted away and become coal．
#89907
A
Having buried
B
Being buried
C
Buried
D
To be buried
Mary is often heard ________ playing piano in the next room in the evening.
#97118
A
practise
B
to practise
C
practising
D
practiced
Taiyuan，a city in North China，was struck by a heavy snowfall last week，________serious traffic problems.
#95391
A
to face
B
faced
C
facing
D
having faced
Not recognizing me at first, __________.
#89976
A
he closed the door
B
the door was closed
C
the door was close
D
I closed the door
The Turners consider ________a computer, which is commonly considered _____a great help in our work and study.
#93795
A
to buy; to be
B
buying ; to be
C
to buy; being
D
buying; being