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【題目】A spaceship _________to Mars. It has not come back_________ .

A. has gone ; yet B. has been ; already

C. has gone ; already D. has been ;ever

【答案】A

【解析】

句意:宇宙飛船已經去了火星。它還沒有回來。have/has been to表示去過某地,現(xiàn)在已經回來;have/has gone to表示去了某地,還沒有回來。根據“It has not come back”可知,宇宙飛船還沒有回來,排除B,D答案;already用于肯定句,yet用于否定句,故答案為A。

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