The country has already sent up three unmanned spacecraft, the most recent          at the end of last March. 
#97890
A
has been launched
B
having been launched
C
being launched
D
to be launched
推荐题目
_________, 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
The storm left ,_______ a lot of damage to this area .
#98956
A
caused
B
to have caused
C
to cause
D
having caused
A Nepal plane crashed in bad weather, ________ all 18 on board.
#88876
A
killing
B
killed
C
having killed
D
to kill