题目列表(包括答案和解析)
—The country has already sent up an unmanned spacecraft to the moon.
—Yes. Chang'e I to the moon last October.
A. has been sent B. has sent C. was sent D. sent
—The country has already sent up an unmanned spacecraft to the moon.
—Yes. Chang’e I to the moon last October.
| A.has been sent | B.has sent | C.was sent | D.sent |
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