单选题：The question came up at the meeting ________ we had enough m..

Failure can be positive contribution to your life________you learnhow to use it.[ ]A．sinceB．unlessC．even ifD．once

When I talked about the thing, I felt Jane watching me uncomfortably, looking________she wished to speak.[ ]A. as thoughB. even thoughC. so thatD. in case

—How far apart do they live?—________I know, they live in the same neighbourhood.[ ]A. As long asB. As far asC. As well asD. As often as

Schools in the east tend to be better equipped, ____ those in the west are relatively poor.[ ]A. AsB. While C. WhenD. But

_______he will offer us enough help doesn't matter a lot to our success. [ ]A. IfB. WhetherC. BeforeD. How