_____many times, they succeeded _________ the experiment.
#96579
A
Having tried; in doing
B
Tried; in being done
C
Having tried; to do
D
Tried; doing
推荐题目
All things ___, the planned trip will have to be called off.
#97326
A
considered
B
be considered
C
considering
D
hating considered
The news reporters hurried to the airport, only______the film star had left.
#91927
A
to tell
B
telling
C
to be told
D
having told