The country has already sent up three unmanned spacecrafts, the most recent ____at the end of last March.
A.to be launched | B.launched |
C.being launched | D.has been launched |
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The country has already sent up three unmanned spacecrafts, the most recent ____at the end of last March.
A.to be launched | B.launched |
C.being launched | D.has been launched |