The country has already sent up 3 unmanned spacecraft, the most recent        at the end of last March.
#91255
A
was launched
B
being launched
C
has been launched
D
having been launched
推荐题目
The football match ______, crowds of people poured out into the street.
#91596
A
was over
B
has been over
C
being over
D
had been over
They lived in a beautiful village, with many trees and flowers _______ it.
#91071
A
surrounded
B
surrounds
C
surrounding
D
to surround
. With the weather conditions   , they flew to London immediately.
#91548
A
considered
B
considering
C
to consider
D
to be considered