He had not______made up his mind what attitude to adopt towards

He had not______made up his mind what attitude to adopt towards her.
A、as yet
B、as well
C、as usual
D、as though
【正确答案】：A
【题目解析】：as yet 至今仍； as well 也；as usual 照例；as though 好像句意：他还没有决定对她采取什么态度。