Question

【题目】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

Answer 1

【答案】A

【解析】

句意：宇宙飞船已经去了火星。它还没有回来。have/has been to表示去过某地，现在已经回来；have/has gone to表示去了某地，还没有回来。根据“It has not come back”可知，宇宙飞船还没有回来，排除B,D答案；already用于肯定句，yet用于否定句，故答案为A。