_________, the experiment is sure to succeed.
#90652
A
If carefully doing
B
If carefully done
C
If it done carefully
D
If it doing carefully
推荐题目
 _______ by the rise of house price, people in big cities live under great pressure.
#89445
A
To be affected
B
Affected
C
Having affected
D
Affecting
_____ here, come and have a cup of tea.
#96234
A
Passing
B
To pass
C
Pass
D
Having passed