China became the third country in the world to be able to independently carry __________ manned space flights.

China became the third country in the world to be able to independently carry __________ manned space flights.

A. by

B. up

C. on

D. out
Xem đáp án
D là đáp án đúng
Lời giải:
carry out: tiến hành, thực hiện