题目内容：

you must do something to prevent your house ___ A:to be broken into B:from being broken into
c:to break into D:from breaking into

优质解答

1.答案：B.
2.翻译：你必须做点事情以防止你的房子被（人）破门而入.
3.
1）固定短语：prevent sb/sth from doing sth,意思是“防止/阻止某人/物做某事”.
2）而此题中sth（your house）和后面的动词break in“闯入/破门而入”之间是被动关系,所以后面用被动结构being done即：being broken in,而不能用主动结构doing即：breaking in.
3）所以,正确答案是B.