题目内容
用所给动词的正确时态和语态完成下面句子
Much information _______(send)back to the earth since the spacemen began their exploration on the moon.
答案:has been sent
练习册系列答案
相关题目
题目内容
用所给动词的正确时态和语态完成下面句子
Much information _______(send)back to the earth since the spacemen began their exploration on the moon.