.He asked ____any elephants in the zoo the day before. A,if did you see B,if you had seen C,whether did you see D,that you had seen
The patient has been ___ by nurses night and day since the operation.
You can have your computer repaired by John, which is ___ he is ___.
After a series of researches, they finally ___ that the pollution was the leading factor contributing to the death of the creatures in the river.
The evening party ___ cheers but everyone was still immersed in the happy atmosphere of it.
In the past few years the worked ___ a lot of suggestions but none of them was adopted.