问题补充:
Man-made-satellites into space by many countries.
A. was sent up
B. is sent up
C. have been sent up
D. has been sent up
答案:
A. was sent up
B. is sent up
(答案→)C. have been sent up
D. has been sent up
解析:可联系答.案.网客服索取。
时间:2020-02-21 13:20:40
Man-made-satellites into space by many countries.
A. was sent up
B. is sent up
C. have been sent up
D. has been sent up
A. was sent up
B. is sent up
(答案→)C. have been sent up
D. has been sent up
解析:可联系答.案.网客服索取。