单选题：The old man asked Lucy to move to another chair ________ he ..

_________I meet him, I always think of the things which happened between us.[ ]A. Every timeB. For the timeC. The nightD. At no time

—How long is it ___ the new math teacher came here?—Two weeks. The students just wonder how ___ they can go with him.[ ]A. since, far B. when, soon C. before, far D. that, long

David Beckham suffered a serious injury this weekend ________ playing for AC Milan, and it appearsthe soccer star will miss the World Cup.[ ]A. whileB. if C. where D. whether

The question came up at the meeting ________ we had enough money to do theresearch.[ ]A. whetherB. thatC. ifD. what

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