英语句子题,明天交,

题目

英语句子题,明天交,
改写句子
They can hardly decide what they will do next
----- ----- for them to decide what ---- ---- next .
The light in the room was so weak that the doctor wasn't able to
operate
The doctor -----do the ---- ---- such bad light inside the room.
They don't often hear the twins sing the song in the school.
------of the twins --- often heard -----sing the song in the school.

答案

1.It's difficult,to do.
2.couldn't ,operation,in
3.Neither,is,to