1.

The low-cost Mars mission craft of India, which ISRO successfully placed in the Martian orbit a year back in September 2014, is now expected to last longer than previously expected because of the fuel it has been able to save

A. which ISRO successfully placed in the Martian orbit a year back in September 2014.
B. which ISRO had successfully placed in the Martian orbit a year back in September 2014.
C. which ISRO could successfully placed in the Martian orbit a year back in September 2014.
D. which ISRO successfully placed in the Martian orbit a year back on September 2014.
Answer» C. which ISRO could successfully placed in the Martian orbit a year back in September 2014.


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