China _______ a lot in the last few years.Now it has become one of the strongest _______ in the world.
A.changes, countries | B.changed, country |
C.has changed, countries | D.had changed, countries |
China _______ a lot in the last few years.Now it has become one of the strongest _______ in the world.
A.changes, countries | B.changed, country |
C.has changed, countries | D.had changed, countries |