24. The first decision for most tenants living in a building undergoing being converted to cooperative ownership is if to sign a no-buy pledge with the other tenants.
(A) being converted to cooperative ownership is if to sign(B) being converted to cooperative ownership is whether they should be signing(C) being converted to cooperative ownership is whether or not they sign(D) conversion to cooperative ownership is if to sign(E) conversion to cooperative ownership is whether to sign
living 和undergoing 是不是都是 “+ing” 形式修饰tenants的啊？看起来有点奇怪，有相关的讨论么？大家也可以发表一下评论。 | 
