________ to his experiment, he didn't notice that autumn had already come.
#88271
A
Devote
B
Devoting
C
Devoted
D
To devote
推荐题目
A big earthquake __________7.1 on the Richter scale struck Yushu, knocking down buildings and causing more than two thousands people to lose their lives．
#97610
A
measured
B
measuring
C
to be measured
D
measures
customers, the company said the amount of the chemical in the shampoo products wouldn’t harm people’s health.
#95543
A
Calming
B
Having calmed
C
To calm
D
Calmed
So difficult ____that no one could ___ a good solution to it.
#90783
A
was the problem; come up with
B
the problem was; come up with
C
the problem was; put up with
D
was the problem; put up with
The women kept her eyes _____ on her baby for quite some time.
#97255
A
to fix
B
fixed
C
fixing
D
being fixed
________ many times , he finally understood it.
#99000
A
Told
B
Telling
C
Having told
D
Having been told