已知集合A={x|-4≤x＜2 }，B={x|-m-1＜x≤m-1，m＞0}，若C_RA⊇C_RB，求满足条件的m的取值集合．

My pen-friend，Peter，wrote to me，expressing the hope _____ he would come to Beijing to see the 2008 Olympic Games．

A．which

B．that

C．what

D．whether