You are allowed to go out you promise to be back before 11 o'clock tonight.
A. so long as
B. so far as
C. as soon as
D. as far as
网友回答
(答案→)A. so long as
B. so far as
C. as soon as
D. as far as
解析：考查连词辨析。A只要；B就…；据…（用与疑问句或者否定句中）;C一…就…；D据…(用于肯定句中)；句意：只要你答应在11点前回来，我就允许你外出。根据句意说明A正确。