1.____leaves the room last night ought to turn off the lights.
2.--What are you anxious about?
A.How can we succeed
B.Whether we can succeed
C.When can we succeed
D.That we can succeed
3.The news ____ he was kidnapped surprised us greatly.
4.The nurses are trying their best to reduce the patient's fear ____ he would die of the disease.
5.The reason ____the little actress has been such a success is ____she is both clever and hard-working.
A. why, why
6.His suggestion ____ the meeting be delayed was turned down.