Complete the following sentences as required(根据所给要求,完成下列句子):
【1】They heard a small explosion from their bedroom. (改为反意疑问句)
They heard a small explosion from their bedroom, _________ _________?
【2】The fruits on the plate look like a kangaroo. (对划线部分提问)
_________ _________ look like a kangaroo?
【3】His voice was too weak for them to hear. (保持句意基本不变)
His voice was _________ weak that they _________ hear it.
【4】him, a button, pressed, beside, he, on the wall(连词成句)
_______________________________________________________________.