With his attention _________ on his book, he didn’t notice someone entering his room.
#90427
A
concentrating
B
concentrated
C
to concentrate
D
concentrates
推荐题目
Children in China today have nothing ______.
#97979
A
to worry
B
worried
C
to worry about
D
worrying about
____ by high mountains, the city is infamous for air pollution.
#90478
A
Surrounding
B
To be surrounded
C
Surrounded
D
Having surrounded
Some doctors are criticized for _____ patients to buy too many medicines.
#97052
A
advising
B
demanding
C
suggesting
D
driving
______ almost all our time to our schoolwork in the past three months, we have almost no time for fun and play．
#97822
A
Having devoted
B
Devoted
C
To devote
D
To have been devoted