These people are accustomed ＿hard work.I was preparing ＿bed when I head a knock at the door.

题目

These people are accustomed ＿hard work.I was preparing ＿bed when I head a knock at the door.
用介词填空
刚刚打错了是heard

答案

1.to
2.你确定这个必须填介词吗?我还是觉得应该填the（prepare the bed:铺床）,若一定要填介词我就不知道填什么了.
heard这个不是关键,关键是你确定这个题目要求必须用介词填空、不能用冠词吗?