【问题】 Mary is keen on ( ) conjuring tricks. A.performB.being performedC.performingD.performed

Mary is keen on ( ) conjuring tricks. A.performB.being performedC.performingD.performed

正确答案:performing

题目解析:本题出自新疆财经大学 ,甘肃开放大学 综合英语2,由丰阳塔题库搜集整理。