“是否”造句

但法律专家们不能肯定这一指控是否成立。
But legal experts are not sure if such a charge can stick.

关键问题是4名被告是否存在欺诈行为。
The key issue was whether the four defendants acted dishonestly.

每天都有人来检查是否一切都井然有序。
Someone comes in every day to check all is in order.