Sindy,____to be here at 8 o'clock .A.is sureSindy,____to be here at 8 o'clock .A.is sure B.is sure that C.will be sureD.be sure已知道不选B项,请帮我逐一分析A、C、D项（具体一点）
问题描述：
Sindy,____to be here at 8 o'clock .A.is sure
Sindy,____to be here at 8 o'clock .
A.is sure B.is sure that C.will be sure
D.be sure
已知道不选B项,请帮我逐一分析A、C、D项（具体一点）
答